Wegener believed continents moved, but he did not know how. Identify what needed to happen before Wegener's idea about moving continents could be proven.

A. Wegener had to recheck his data and change his conclusions.

B. New information was needed on the composition of Earth's crust.

C. Scientists had to directly observe tectonic plate movement.

D. Advances in technology were needed to gather more evidence.

As per Alfred Wegener, the continents moved apart from each other due to the spreading of the sea floors and the displacement took place due to the opening of the seas and breaking up of the supercontinent.

Alfred Wegener gave several pieces of evidence to prove that the continent moved in the past.

Before the continental drift theory was published scientists need more evidence and raw data that could prove that continents moved.

The need for advanced technology that could enable gather more evidence of the origin of the earth.

Wegener gave his theory as the map of continents in support of his study about the earth's history.

Hence the correct option is D.

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