In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
It is indeed (1) _______ to create an urban forest to control air pollution. It is like a child’s play if (2)_______ awareness is created among people of all ages. Just (3)_______ a mango seed or a jackfruit seed into fertile ground or make seed bombs for the seed to sprout during rainy season. Authorities must take (4)________ measures to ensure a part of the town or city is allocated to plant trees. This ensures the (5)________ of adequate oxygen to people.
Select the most appropriate option to fill in blank number 3.