La bildo havas klaran sencon.

Because it is the direct object of havas.

In Esperanto, the thing that is directly affected by the verb usually takes -n. Here:

• La bildo = the picture/image
• havas = has
• klaran sencon = a clear sense/meaning

So the picture is the subject, and klaran sencon is what it has.

Also, the adjective must agree with the noun, so both words get -n:

• klara senco = a clear meaning
• klaran sencon = a clear meaning (as direct object)

In Esperanto, adjectives agree with the nouns they describe in:

• number: singular or plural
• case: whether they take -n

So if the noun is sencon, the adjective describing it must match:

• klara senco
• klaraj sencoj
• klaran sencon
• klarajn sencojn

This agreement is a very regular feature of Esperanto.

Because klara is an adjective, and it describes the noun senco.

• klara = clear
• klare = clearly

In this sentence, clear describes sense/meaning, not the verb has. So you need the adjective form:

• klara senco = a clear meaning

If you used klare, it would be an adverb, which would describe an action or the whole clause, not the noun.

La is the definite article, meaning the.

So:

• la bildo = the picture / the image

A useful point for English speakers: Esperanto has only one article, la, and it never changes for gender, number, or case.

Also, Esperanto normally does not use a separate word for a/an. So:

• bildo = a picture / picture
• la bildo = the picture

Because Esperanto usually leaves the indefinite article unexpressed.

English says:

• the picture has a clear meaning

Esperanto says:

• La bildo havas klaran sencon

There is no separate word for a/an. The noun by itself can already mean a or just an indefinite noun.

So:

• senco = a sense / meaning
• sencon = a sense / meaning (direct object)

Because Esperanto verbs do not change according to the subject.

The ending -as always marks the present tense:

• mi havas = I have
• vi havas = you have
• li havas = he has
• la bildo havas = the picture has

This is much simpler than English, where we have have but has.

In Esperanto, the subject changes, but the present-tense verb form stays the same.

Not exactly because of -o alone. The -o ending tells you it is a noun. It is singular because it does not have the plural ending -j.

So:

• bildo = picture, singular
• bildoj = pictures, plural

If the sentence were plural, it could be:

• La bildoj havas klarajn sencojn. = The pictures have clear meanings.

Yes. Esperanto word order is fairly flexible, especially because the -n ending helps show what the direct object is.

The most neutral order here is:

• La bildo havas klaran sencon.

But other orders are possible for emphasis, for example:

• Klaran sencon havas la bildo.

That still means basically the same thing, because klaran sencon is marked as the object by -n.

Even so, learners should usually start with the normal subject–verb–object order, since it is the clearest and most natural in many situations.

Yes, in this sentence senco means something like sense, meaning, or point.

It often refers to the idea that something is understandable or conveys a message. So klara senco suggests that the picture has an obvious or understandable meaning.

A learner might also meet signifo, which can also mean meaning. Very roughly:

• senco often focuses on sense, point, or overall meaning
• signifo often focuses on the meaning of a word, symbol, or expression

In many contexts they overlap, but senco is perfectly natural here.

Because bildo is the subject, not the direct object.

In this sentence:

• La bildo = the thing doing the having
• klaran sencon = the thing being had

Only the direct object takes -n here.

So:

• subject: La bildo
• verb: havas
• object: klaran sencon

That is one of the nice things about Esperanto: words are built very regularly.

In this sentence:

• bild-o = picture/image
• hav-as = have, present tense
• klar-a-n = clear + adjective ending + object ending
• senc-o-n = sense/meaning + noun ending + object ending

This makes Esperanto easier to analyze than English in many cases. Once you know the common endings, you can often break words apart very quickly.