Compara las cosas que Angela extraña de su pueblo con los motivos que da su
madre para no ir a vivir a la ciudad. ¿Qué indican acerca
del cambio que está experimentando
Angela?
(San Manuel Bueno, Mártir)

The answer is c because it the correct pronoun

These objects represent mayan numerals. just like roman numerals, they are combined to symbolize a numeral and this enabled astronomers, scholars and architects to compute various equations yet it was also used by farmers and traders in their day to day transactions.

Good service and great quality food.( buen servicio y comida de gran calidad ).

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).