In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

Q: Most crops require at least _ to eight hours of full sun a day to thrive.

A: six
****
Q: Lightning can travel _ miles or more horizontally from the storm, then strike the ground.

A: six
****
Q: Silkies have _ seasonal moults but little hair is dropped.

A:
two
****