It's D. <span>Increase their power</span>
Answer:
"Im making the mother of all omeletes here jack, you cant fret over every egg" -Senator armstrong 2022
Explanation:
Most colonists lived <em>on farms</em>, where a large family was considered an advantage.
On a farm, having a large family to help out and get things done sped up the process and gave them the opportunity to do more on their farm, being efficient made the families more money, and having a large family made things very efficient.
Hope this answer helped. :)