That would be the process of Photosynthesis
Producing gametes I’m pretty sure
I would go with B.
Because CO2 is taken through the stomata in the 2nd stage of photosynthesis
A meteroite is a meteor that struck earth
a meteorode is a small rock in space that could eventually turn into a meteor
asteroids are a cluster of meteors
comets are icy meteors, seeing that the oort cloud is mostly ice i would say that the answer is comets.