Which contributes to the lack of evidence of the Period of Heavy
Bombardment on Earth?

The correct answer to this would be:  

Earth’s volcanoes

Together with weathering and plate tectonic movements, Earth’s volcanic eruptions and emission of lava has destroyed/covered many of the craters which were created on Earth during the Period of Heavy Bombardment.

IamSugarBee

The correct answer to this would be letter:  

A. Earth’s volcanoes

Together with weathering and plate tectonic movements, Earth’s volcanic eruptions and emission of lava has destroyed/covered many of the craters which were created on Earth during the Period of Heavy Bombardment.

i believe the answer is a.