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.
- The word "necessary" fits the context as it implies that authorities must take essential, required, or needed measures to ensure a part of the town or city is allocated to plant trees.
- The other options, like "time-consuming," "lethargic," or "glamorous," do not convey the idea of taking essential or required steps, so they are not suitable in this context.
Hence, the correct option would be necessary.