Select the correct active form of the given sentence.

This trail is not frequently visited by hikers.

Hikers do not visit this trail frequently.

Let's analyze each option:

☀ Hikers not have frequently visit this trail.

This option is not grammatically correct in the active voice. The correct form should be "Hikers have not frequently visited this trail." However, this option doesn't follow the correct structure for the active voice.

☀ Hikers does not frequently visit this trail.

This option is also not in the correct grammatical form for the active voice. The correct form should be "Hikers do not frequently visit this trail."

☀ Hikers do not visit this trail frequently.

This option is the correct active form of the given sentence. It correctly represents the original sentence in the active voice. The subject "hikers" performs the action "do not visit" the object "this trail" frequently.

☀ Hikers did not frequently visit this trail.

This option is in the past tense, whereas the original sentence is in the present tense. While it is a grammatically correct active form, it doesn't match the tense of the original sentence.

Correct answer: ☀ Hikers do not visit this trail frequently.