Krypton is named after the greek word that means “secret.” which explains why krypton was most likely given this name

Explanation:

i think its c becouse i got this answer write sorry for the miss spelled words i type on pc whith out looking on the screen and not realizing what I wrote lol.

c- cold periods in earth's history during which glaciers covered much of the surface.

explanation:

i'm assuming that the correct answer is indeed the first one/ "a"..