Asap extra points large drops of rain form in a cumulonimbus cloud are started select one: a. hail stones melting b. water vapor condensing in larger quantity c. small rain droplet colliding with others and forming larger drops

Actually, large drops of rain form in a cumulonimbus cloud are stated by water vapor condensing in large quantity. If the humidity is very high, or around 100%, water droplets will form extra large during the condensation process. Additionally, this increases the size of the cloud. The droplets will amalgamate to form even larger rain drops that fall because of gravity. I hope this helps! :))

Ps. Cumulonimbus clouds also produce hail, but that hail is not the reason for why they produce big rain drops.