There are some rules, but the pronunciation is also important.
If the word ends in a vowel, an “n”, or an “s”, stress the last-but-one syllable:
If the word ends in a consonant other than “n” or “s”, stress the last syllable: ...
If the word has an acute accent, ignore the above rules and stress the accented syllable:
Althought I'm not sure what information was given for the question, I can translate what the sentences are saying:
The question is asking what Ana and Ricardo have in common.
The options are:
They're from Mexico
They have new clothes
Their parents/fathers yell a lot
Ricardo and Ana both have 2 brothers/siblings.
Answer:
The right answer is, C. Hayas organizado.
* Estoy orgullosa de que tú hayas organizado esta manifestación a favor del medio ambiente.
Explanation:
To complete the sentence, they give us the verb that we must use, so we must identify the person in the sentence and the verb tense in which the response options are posed in order to combine it logically and that it has a relationship with what is being expressed. .