Final answer:
The subject of this question is English and the answer explains how to add commas to a sentence to correct its punctuation.
Step-by-step explanation:
The subject of the question is English. The sentence provided is: "The crocodiles snakes and lizards at Nalini Vishwakumar's petting zoo are all friendly."
There are no commas in this sentence. To correct the punctuation, we need to add commas to separate the list of animals mentioned in the sentence. The correct sentence should be: "The crocodiles, snakes, and lizards at Nalini Vishwakumar's petting zoo are all friendly."
Learn more about Punctuation in English sentences