Which fruit has one seed with grooves on it?

a. cherry

b. banana

c. peach or nectarine

d. orange

The answer is c. peach or nectarine

A peach has only one seed. Its seeds have grooves around it.

Banana has many seeds although very small to notice. A cherry has one or two seeds but it does not have grooves on it. An orange seed has grooves on it but there are a lot of them in one fruit.