Meaning: 'On' in this context means 'at' or 'in relation to', indicating that the initiatives are happening at the campus.

Wrong options:

• by: 'By' suggests a means or method, which does not fit the context of location for the initiatives.
• of: 'Of' indicates possession or belonging, which is not appropriate here as it does not convey the idea of location.
• as: 'As' is used to indicate a role or function, which does not suit the context of describing where the initiatives are promoted.

Correct answer: more

Explanation: The word 'more' is an adverb that indicates an increase in the action of recycling, fitting grammatically and contextually as it modifies the verb 'recycle' to suggest a greater amount of recycling.

Meaning: 'More' means a greater quantity or degree, indicating that students are encouraged to recycle to a larger extent.

Wrong options:

• with: 'With' is a preposition that does not fit here as it does not modify the action of recycling.
• at: 'At' is a preposition indicating a location, which does not apply to the action of recycling in this context.
• in: 'In' is also a preposition that does not appropriately modify the verb 'recycle' in this sentence.

Correct answer: otherwise

Explanation: The word 'otherwise' is used to indicate a consequence or alternative outcome, fitting well in the context of the sentence as it suggests that the fruit would have been discarded if not rescued. It aligns grammatically and contextually with the conditional nature of the statement.

Meaning: 'Otherwise' means 'in a different situation' or 'if not', indicating that the fruit would have been wasted.

Wrong options:

• then: 'Then' indicates a sequence in time, which does not fit the conditional context of the sentence.
• might: 'Might' suggests possibility but does not convey the definitive outcome of the fruit being thrown away.
• will: 'Will' indicates future certainty, which does not align with the hypothetical situation presented.

Correct answer: No

Explanation: The word 'No' is used to indicate the absence of electricity, fitting grammatically and contextually as it negates the statement about electricity usage in the process described.

Meaning: 'No' means not any or none, indicating that electricity was not used in the process of making smoothies.

Wrong options:

• Some: 'Some' implies a quantity, which contradicts the statement that no electricity was used.
• Much: 'Much' suggests a large amount, which is also contradictory to the idea of no electricity being used.
• More: 'More' indicates an increase, which does not fit the context of stating that no electricity was utilized.