Which of the following expressions is used to show agreement?
a. no me gusta
b. a mi tambien.
c.
d. gusta :

Right A mí también (B)

This sentence expresses complete agreement and means in English:

Me too or So do I

The other options are incorrect because:

-No me gusta nada (I do not like it at all) expresses complete disagreement.

-ni…ni (neither ... nor) expresses disagreement and denies both parts of a declaration (to make emphasis in the disagreement)  

-gusta más (like more) also expresses that you are not agree

D. si acabo de recibir su mensaje de texto y le voy enviar uno dentro de 5 minutos

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).