Question

Sea turtles dig holes and lay eggs in the sand at night, covering the holes to protect the eggs from the sun and predators.

Which identifies the beginning of an infinitive phrase in this sentence?

dig holes and lay eggs
in the sand
covering the holes
to protect the eggs

Answer 1

The correct answer to the question stated above is to protect the eggs. An infinitive phrase uses the word "to" as an indicator. Therefore, the words which identify the beginning of an infinitive phrase in this sentence is the phrase with "to" in it.