Directions: Select the alternative that will improve the underlined part of the sentence. In case there is no improvement select ‘No improvement’. The struggle for climate change must be prioritised given that our population is increasing and not decreasing.

Explanation

The correct answer is-No improvement . Key Points Let's look at the structures given below in active and passive forms: Active- Subject + modal verb + V 1 + Object. Passive- Object + modal verb + be + V 3 + by + Subject. Example: She might her task. ( active ) Her task might be finished by her. ( passive ) The former part of the sentence given in the question conforms to the passive voice structure. Following the passive voice form, we finally get- The struggle for climate change must be prioritised given that our population is increasing and not decreasing. Additional Information There is a difference between ' must ' and ' have to ' given below: Must expresses obligation or compulsion imposed by the speaker. Whereas ' have to ' expresses external obligations. Example: We must fasten our seat belts. ( the speaker thinks so ) They have to help the needy. ( others think this and not the speaker )