Can u pwease help me :)

1  is the correct answer

Explanation:

More technological and Health and Medical advancements were made in the Industrial Revolution, which caused a spike in the growing population. More people and/or children were needed to grow economically.

Harnessing energy to run machinery increased our agricultural output and led to improvements in sanitation and health care —all of these things decreased death rates.

answer; ///he could not explain why the continents drifted;