Question

An organelle with cristae

Answer 1

Golgi body is the right answer.

Golgi body also known as packaging department of the cell have cristerns and vesicles

Hope this helps!

Answer 2

I think.....  Mitochondrial cristae are folds of the mitochondrial inner membrane that provide an increase in the surface area. Having more cristaegives the mitochondrion more locations for ATP production to occur.