El escrito de alegaciones incluye la prueba fotográfica.

Escrito de alegaciones is a legal/administrative expression. It refers to a written document in which someone presents their arguments, objections, or statements in a formal process.

• escrito = a written document / submission
• alegaciones = statements, arguments, allegations, or representations made in a legal/official context

So alegaciones alone refers more to the arguments themselves, while escrito de alegaciones refers to the actual document containing them.

This is quite formal Spanish, especially common in legal or administrative Spain Spanish.

In Spanish, de is very often used to link a noun to its type, purpose, or content.

So:

• un escrito de alegaciones = a document of / containing allegations or arguments
• un informe de gastos = an expense report
• una carta de presentación = a cover letter

Using para would suggest more for the purpose of, but here Spanish prefers de because it names the kind of document it is.

Spanish uses the definite article much more often than English.

Here, El escrito de alegaciones means the written submission / the statement of arguments. In a legal or administrative context, it usually refers to a specific known document, so el is natural.

Spanish often uses articles where English might omit them or be less explicit.

Because the subject is singular:

• El escrito de alegaciones = singular
• so the verb must also be singular: incluye

The phrase de alegaciones does not control the verb. The main noun is escrito.

So:

• El escrito ... incluye = singular
• Los escritos ... incluyen = plural

Here prueba means evidence or proof, not a test.

The word prueba can mean different things depending on context:

• una prueba de matemáticas = a test/exam
• una prueba científica = an experiment/test
• una prueba judicial = legal evidence/proof

In this sentence, because the context is legal/administrative, la prueba fotográfica means photographic evidence.

The sentence is talking about one item or one category of evidence in the singular.

• la prueba fotográfica = the photographic evidence

In legal Spanish, a singular noun can sometimes refer to evidence in a general or collective sense. If there were several separate photos or several items of photographic evidence being emphasized individually, you might also see:

• las pruebas fotográficas

Both are possible in the right context, but the singular here is perfectly natural.

In Spanish, most descriptive adjectives normally come after the noun.

So:

• prueba fotográfica
• evidencia documental
• informe técnico

Putting the adjective before the noun is much less common here and would sound unnatural in this formal phrase.

Also, fotográfica agrees with prueba:

• prueba is feminine singular
• so the adjective is fotográfica, also feminine singular

They are the same adjective, but the ending changes to match the noun.

• fotográfico = masculine singular
• fotográfica = feminine singular
• fotográficos = masculine plural
• fotográficas = feminine plural

Examples:

• el material fotográfico
• la prueba fotográfica
• las pruebas fotográficas

Since prueba is feminine singular, the correct form is fotográfica.

Yes, but the meaning and register are different.

• incluye fotos = includes photos
  
  • everyday, simple, less formal
• incluye la prueba fotográfica = includes the photographic evidence
  
  • formal, legal, technical

So if you are speaking casually, fotos may work. But in official or legal Spanish, la prueba fotográfica sounds much more appropriate.

Yes. The vocabulary and style sound very natural in Spain in legal or administrative language.

Especially typical is the formal noun-heavy style:

• escrito
• alegaciones
• prueba fotográfica

This is not the kind of sentence you would usually hear in casual conversation. It belongs more to official documents, complaints, procedures, or court-related contexts.

In standard Peninsular Spanish pronunciation:

• alegaciones ≈ a-le-ga-THYO-nes
• fotográfica ≈ fo-to-GRA-fi-ka

A few useful points:

• In much of Spain, c before i/e is pronounced like th in think, so -ciones sounds like -thyones
• The stress is on:
  • cio in alegaciones
  • grá in fotográfica

You do not need to pronounce them perfectly to be understood, but those are the usual Spain patterns.