Which word in the sentence is an indefinite pronoun?

both watched themselves on my video of their last game of the season.

a.
both

b.
themselves

c.
my

d.
their

use google

explanation:

adding more details about the struggle rainsford experiences as he swims to the shore

different strategies reach different people based on their ability to understand the material. (from personal experience) when writing an argumentative essay write explaining the subject as though your audience never heard of it before and it is just being introduced, then explain why other people hate it also, afterward you would explain why that would be wrong. i hope that : )