Answer the following question given this paragraph: 

Primate ancestors also mainly ate fruit. They needed to be able to spot colored fruits in the leafy background of the trees ( Figure below ). They also had to be able to judge which fruits were ripe and which were still green. Ripe fruits are usually red, orange, yellow, or purple. Being able to see in color was important for finding food. It was an adaptation that would help fruit-eating primates survive.


Q: Ripe fruits are usually red, orange, yellow, or what?

 Choices:

- white

- blue

- black

- purple

A:
purple
