Question

which sentence contains a split infinitive?
young children seem to thoroughly enjoy playing with soap bubbles and shaving cream.
it is important to give children opportunities to explore their world through sensory experiences.
clay and finger paints are often used to prepare children for writing and drawing.
going to preschool opens the door to learning and encourages kindergarten readiness.

Explanation:

A split infinitive occurs when a word (usually an adverb) is placed between the particle "to" and the base form of a verb. In the first option, the adverb "thoroughly" is inserted between "to" and "enjoy", creating the split infinitive "to thoroughly enjoy". The other sentences do not have words separating "to" from the following verb.

Answer:

A. Young children seem to thoroughly enjoy playing with soap bubbles and shaving cream.