Question

multiple-choice question
why were wegner’s ideas about continental drift rejected by the scientific community?
he couldn’t explain how the continents were moving
continents don’t move
there wasn’t enough evidence
he chose to work in the humanities

Explanation:

Wegener's Continental Drift theory was rejected because he couldn't explain the mechanism (like the force) that moved the continents. The option "he couldn't explain HOW the continents were moving" is correct as the scientific community needed a plausible mechanism, and Wegener lacked that explanation (later plate tectonics provided it). Other options: "Continents don't move" is wrong as they do; "There wasn't enough evidence" is incorrect as he had evidence (like fossil, rock matches); "he chose to work in the humanities" is irrelevant.

Answer:

A. he couldn't explain HOW the continents were moving (assuming this is option A, adjust identifier if needed based on actual options' labeling)