مسار الهروب واضح.

Because Arabic often uses a nominal sentence in the present tense, with no written or spoken word for is / are.

So:

• مسار الهروب = the escape route
• واضح = clear / obvious

Together, مسار الهروب واضح literally works like The escape route clear, but in natural English it means The escape route is clear.

If you wanted a past tense, Arabic would normally use a form of كان:

• كان مسار الهروب واضحًا = The escape route was clear

This is a nominal sentence (جملة اسمية).

It has two main parts:

• مسار الهروب = the subject of the sentence
• واضح = the predicate / the part that gives information about the subject

In traditional Arabic grammar:

• مسار الهروب = مبتدأ
• واضح = خبر

So the structure is:

• [subject] + [predicate]
• مسار الهروب + واضح

Because مسار الهروب is an iḍāfa construction, often called a genitive construct or noun-noun possessive phrase.

In an iḍāfa:

• the first noun usually does not take الـ
• the second noun determines whether the whole phrase is definite or indefinite

Here:

• مسار = route/path
• الهروب = the escape / escaping

Since the second noun is definite (الهروب), the whole phrase مسار الهروب becomes definite:

• مسار هروب = an escape route
• مسار الهروب = the escape route

So even without الـ on مسار, the whole phrase is definite.

Because it is the second noun in the iḍāfa and it makes the whole phrase definite.

Compare:

• مسار هروب = an escape route / route of escape
• مسار الهروب = the escape route

So الـ on الهروب is very important here. It tells you that this is a specific escape route, not just any route.

In this sentence, واضح is the predicate, not an attributive adjective directly attached to the noun.

Arabic often leaves the predicate indefinite:

• البيت كبير = The house is big
• الجو جميل = The weather is nice
• مسار الهروب واضح = The escape route is clear

If you said مسار الهروب الواضح, that would no longer mean The escape route is clear. It would mean something like:

• the clear escape route

So:

• مسار الهروب واضح = sentence
• مسار الهروب الواضح = noun phrase

That is a very important difference.

Yes, but more specifically it is an adjective-like word functioning as the predicate.

واضح means:

• clear
• obvious
• apparent

It agrees with the subject in gender and number when needed, but here it is not just modifying the noun inside a noun phrase. It is saying something about the subject.

Compare:

1. مسار الهروب واضح
   = The escape route is clear

2. مسار الهروب الواضح
   = the clear escape route

In 1, واضح is the predicate.
In 2, الواضح is a regular adjective modifying the noun phrase.

A common pronunciation is:

masār al-hurūb wāḍiḥ

A few notes:

• مسار = masār
  • the ā is a long vowel
• الهروب = al-hurūb
  • the h is pronounced
  • the ū is a long vowel
• واضح = wāḍiḥ
  • the ā is long
  • ḍ represents the emphatic letter ض
  • the final ḥ represents ح, a stronger breathy h sound

Also, in الهروب, the l in الـ is pronounced, because ه is a moon letter, not a sun letter.

In fully vowelled formal Arabic, it would typically be:

مَسَارُ الهُرُوبِ وَاضِحٌ

Case endings:

• مَسَارُ = nominative, because it is the subject (مبتدأ)
• الهُرُوبِ = genitive, because it is the second term of the iḍāfa
• وَاضِحٌ = nominative, because it is the predicate (خبر)

In normal writing, these short vowels are usually omitted:

• مسار الهروب واضح

And in pause, speakers often do not pronounce the final tanwīn clearly.

Yes, but مسار الهروب واضح is the normal, straightforward order.

Arabic often prefers:

• subject first
• then predicate

So this sentence is very natural.

Other orders can happen for style, emphasis, or literary effect, but they are less neutral. For a learner, مسار الهروب واضح is the best pattern to recognize and produce.

Yes. Since مسار is:

• singular
• masculine

the predicate appears in the matching form:

• واضح

If the noun changed, the predicate would change too. For example:

• المسارات واضحة = The routes are clear
• الخطة واضحة = The plan is clear
  because الخطة is feminine singular

So agreement is important.

It can mean several closely related things, depending on context:

• clear
• obvious
• evident
• apparent

So مسار الهروب واضح could mean:

• the escape route is clear
• the escape route is obvious
• the escape route is evident

In context, English might choose different words, but the core idea is that the route is easy to identify or plainly visible/understandable.

Here it is a noun.

الهروب means:

• escape
• escaping
• flight

It comes from the verb هرب = to escape / flee

So the phrase is literally something like:

• route of escape
• escape route

This is very common in Arabic: a verbal idea can appear as a noun inside an iḍāfa construction.