No improvement to this sentence is necessary. It makes perfect sense on its own and sounds right. "Either" always takes an "or" else the word wouldn't make sense, as it's meant to contrast binary options.
eg.
I'm either going to eat food or drink water.
Based on the little contestill, I’m going to go with A.) Groups
It is number 3 ( A simile creates a visual image for the reader I think this is right if not don't worry about me if so can u mark it right
