Final answer:
The equation connecting the earthworm's length (L) and the number of earthworms (N) during a certain period is L = k√N.
Step-by-step explanation:
The equation connecting the earthworm's length (L) and the number of earthworms (N) during a certain period can be represented by option A) L = k√N.
In this equation, k is a constant.
The equation connecting the earthworm's length (L) and the number of earthworms (N) during a certain period is L = k√N.