What is the function of the relative pronoun in the adjective clause?

on the internet, we researched our ancestors, about whom we know almost nothing.

a.
object of a preposition

b.
subject

c.
direct object

d.
possessive

What background knowledge would best support this inference about mario?

Which bibliography entry is written correctly and completely? a. johnson, marie. the solar age. chicago: energy options press, 2014. b. front page story. houston chronicle. 5 apr 2013. c. “will solar work? ” science news. march edition. d. friends of solar. mother earth society, accessed 15 jan 2014.

How did rick respond to this conflict