Select the correct active form of the given sentence.

The animals in the zoo should not be fed.

Don’t feed the animals in the zoo.

The correct active form of the given sentence is Don't feed the animals in the zoo.

The sentence "The animals in the zoo should not be fed" is in the passive voice. The passive voice is formed by putting the subject of the active sentence after the verb "to be" and the past participle of the main verb. In this case, the subject of the active sentence is "the animals in the zoo" and the main verb is "feed." The past participle of "feed" is "fed." So, the passive form of the sentence is "The animals in the zoo should not be fed."

The active voice is formed by putting the subject of the passive sentence before the verb and the past participle of the main verb. In this case, the subject of the passive sentence is "you" and the main verb is "feed." The past participle of "feed" is "fed." So, the active form of the sentence is Don't feed the animals in the zoo.

The other options are incorrect because:

• Don’t be feeding the animals in the zoo is in the present progressive tense, while the original sentence is in the simple present tense.
• Don’t fed the animals in the zoo is grammatically incorrect. The verb "to feed" is followed by a direct object, but the phrase "don’t fed" is not a direct object.
• Feed not the animals in the zoo is grammatically incorrect. The word "not" should not be placed between the verb "feed" and the direct object.