What were two aspects of Wegener's continental drift hypothesis that were objectionable to most Earth scientists?
a. Scientists objected to the driving force behind plate tectonics, which Wegener claimed to be the gravitational forces of the Sun and Moon and his claim that continents traveled by floating over oceanic crust.
b. Scientists objected to the driving force behind plate tectonics, which Wegener claimed to be the momentum from the Earth's rotation, and his claim that continents traveled by plowing through oceanic crust.
c. Scientists objected to the driving force behind plate tectonics, which Wegener claimed to be the gravitational forces of the Sun and Moon and his claim that continents traveled by plowing through oceanic crust.
d. Scientists objected to the driving force behind plate tectonics, which Wegener claimed to be the result of convection within Earth's mantle, and his claim that continents traveled by plowing through oceanic crust.
e. Scientists objected to the driving force behind plate tectonics, which Wegener claimed to be the momentum from the Earth's rotation, and his claim that continents traveled by floating over oceanic crust.

Alfred Wegener in 1915 published 'The Origin of Continents and Oceans'. But geologists denounced his theory. Wegener's Continental drift is the theory that the different continents of the planet earth have moved over time causing them to shift positions. he thought all continents were once joined together before breaking up to different positions.

Part of the objections he faced was because he did not have much evidences to back up his theory.