Answer:
1.) Ask the person why does he/her wants to come inside and what does he/she wants. Or call the parents to make sure if they know the person.
2.) Tell the child that the rumours he/she spread is fake.
3.) Tell my friends to play inside their homes because of lockdown.
4.) I will not accept it's request and ask an elder if they know the person who sent me friend request.
Explanation:
K
