The sentence that is punctuated correctly is,
D. John and Mary's house has a large front yard.
Hope this helps. :)
"Autobiography" means a biography of oneself, that is, the author is describing their own past and their own life.
When you describe your own life, typically you would write it in the first person ("I") and this is also true for Barrio Boy.
A. True Easter Island is based on real events
Infinitive phrase because infinitives have "to ___" and the blank is an action word ☺
Answer:
I would say 1. B 2. C 3. C