The right option is c. consumed
in place of; consumed together with
A substitute is a good that is consumed
in place of another good, and a complement is a good that is consumed together
with another good. Substitutes serve in place of another and complements make
something seem better.
I'm pretty sure that cells contain genes inside them.
I'll say C, Science cannot answer difficult question...let me know.
A) Vibrations
Sounds vibrate the eardrum