Select the most appropriate option to fill in blank number 4.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. necessary.
- Necessary means needed to be done, achieved, or present; essential.
- The sentence talks about how it is the responsibility of the authorities to make sure a part of the town or city is allocated to plant trees.
- Since it is their responsibility, they must take the actions that are needed to be taken.
- Thus, the word “necessary” is correct here.