two same size anvils are dropped from different heights (one higher than the other) . Assume both anvils are made of the same material (iron) and there is no air resistance. Which anvil hits the ground first

When can a theory be modified if a new type of technology allows for new observations that raise new questions? a-immediately, while the questions about the theory are being asked b-after new hypotheses related to the theory are tested in experiments c-only after the new observations disprove all parts of the theory d-while scientists begin to think about how the theory could improve