Question

how long is an apple seed? select the best estimate. 6 millimeters 6 meters 6 kilometers 6 centimeters

Explanation:

An apple seed is very small. 6 meters, 6 kilometers and 6 centimeters are all too large for the length of an apple - seed. Millimeters are a more appropriate unit for measuring small objects like apple seeds.

Answer:

6 millimeters