Correct Answer: Manali and Ankita went to their school.

Solution : The correct answer is option 1: 'Manali and Ankita went to their school.'
Explanation:

• - When two or more nouns are joined by 'and' then the pronoun used should be plural. - Example: Rohit and Oma went to their college.
• - Thus, the correct answer is-' Manali and Ankita went to their school."
• - Hence, option 1 is the most appropriate answer.
• - Let us explore other sentences-
• - When two or more nouns are joined by 'and' then the pronoun used should be plural.
• - Example: Kartik and his family have completed their lunch.
• - If we are talking about separate persons then the pronoun used for them will be plural.
• - Example: The class teacher and the project head submitted their scoresheet.
• - When two or more nouns are joined by 'and' then the verb used should be in plural.
• - Example: Palak and Ankit are in the same team for the dance competition.