¿a quién le otorgó un homenaje otorgándose el apellido “neruda”
a.
a una actríz
c.
a su mejor amigo
b.
al poeta checo jan neruda.
d.
a uno de sus profesores de universidad

Le otorgó un homenaje otorgándose el apellido "Neruda":

b. Al poeta checo Jan Neruda.

Explanation:

Eliecer Neftalí Reyes Basoalto, after known as Pablo Neruda, never told the reason of his pseudonym, though one of the most accepted theories is that he was having fear for his father, who never endorsed the idea of a poet or writer in his family, adopting the name Pablo Neruda for signing his poems published, taking the last name from Jan Neruda, other poet who died 13 years before to his birth.  

guatemala is the correct answer