One of the main objections to wegner's hypothesis of contental drift was that he was unable to provide an acceptable?

One of the main objections to wegener's hypothesis of continental drift was that he was unable to provide an acceptable?

a.rate of continental drift

b.date of continental drift

c.mechanism for continental drift

d.direction of continental drift

Does anyone know the answer to this

Andrewolf71: The Answer is mechanism for contintental drift because he could not prove the theory so no one believed him. happy