In what kind of sentence do you use “desde hace”? Hint desde hace, desde, hace video -in past tense sentences
-in future tense sentences
-in present tense sentences
-in conditional tense sentences

In past tense sentences.
proof : desde haces means “ since “
desde haces = since a while ago

For this question, it will be important to use the words "mejor" (better), "lo mejor" (the best), and "lo peor" (the worst). while "mejor" is comparative (you are comparing one thing to something else), "lo mejor" and "lo peor" are superlative (there is nothing else better or worse than what these words are describing - there is no comparison).  you could say something like: la música rap es mejor que la música clásica - que es lo peor - pero la música rock es lo mejor de todas las formas de la música (rap music is better than classical music - which is the worst - but rock music is the best out of all the forms of music).

The answer is b because it’s los amigos . los amigos is plural and dicen is plural and masculine .