Which words in the sentence are the complete noun clause?

the big green parrot speaks to whoever comes into the house.

a. whoever comes into the house
b. the big green parrot speaks
c. into the house
d. the big green parrot speaks to whoever

Among the options provided above, the noun clause is:

A.    whoever comes into the house

Noun clause is introduced by words such as whoever, whomever and others. It is a dependent clause which can act as a noun, subject, direct or indirect objects, predicate nominatives, and preposition objects. 

the animal shelter ad with animals in cages, starving and dying.

explanation:

you can't answer this. more information is needed.