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

Example Input: Plants are _ feet apart with ten feet between rows.
Example Output: four

Example Input: Plants have many white flowers with _ petals, giving the plant a white, flat-topped appearance.
Example Output: four

Example Input: Reproductive maturity is reached at four to _ years in females and seven to nine years in males.
Example Output:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
six

