Yeah past participle but its also past tense
like: (IK ITS A WEIRD SENTENCE XD)
my brother crushed the ant
active (its past here)
the ant was crushed
passive (its p.p here)
not sure if this is the same lesson u r asking about...
The answer should be A. building.
Answer:
it shows how it helps your body
in the human brain the word 'repairing' is very motivational and is automatically known as helping
it shows a fit body, which most people strive for