The children are making cake.

  1. He
  2. She
  3. It
  4. They


A pronoun is a word that is used as a substitute of a noun. In a sentence, the form of pronouns vary according to to three kinds of persons (first, second and third), two kinds of number (singular and plural), and four kinds of gender(masculine, feminine, neuter and common).

The correct answer is: They

    The correct answer is "They".
    From the above-mentioned example, we can say that some children are preparing a cake . Here, the subject is the children and to represent it, we must use a third person plural number pronoun. Among the given options, only the word "they" has a similar feature. So, the correct answer is "they".