Meaning: To 'earn' means to receive something as a result of effort or work, in this case, accumulating points to gain status.

Wrong options:

• finish: The word 'finish' implies completing something, which does not fit the context of acquiring status through spending.
• lose: The word 'lose' suggests a negative outcome, which contradicts the idea of gaining status through spending more.
• throw: The word 'throw' is unrelated to the context of earning or acquiring status and does not fit grammatically.

Correct answer: tier

Explanation: The term 'tier' is appropriate as it refers to a level or rank within a system, which is exactly how the loyalty program is structured. It fits both grammatically and contextually.

Meaning: A 'tier' is a level or rank in a hierarchy, indicating the different statuses within the loyalty program.

Wrong options:

• system: The word 'system' refers to an organized structure but does not specifically denote a level or rank, making it less relevant here.
• research: The word 'research' pertains to investigation or study, which is unrelated to the concept of loyalty status levels.
• adjustment: The word 'adjustment' implies a change or modification, which does not fit the context of describing a level in a loyalty program.

Correct answer: also

Explanation: The word 'also' is used to indicate an addition, which fits well in the context of the sentence as it introduces another action the airline will take. It maintains the flow and coherence of the information presented.

Meaning: 'Also' means 'in addition' or 'too,' indicating that the airline will take another action alongside the previous one mentioned.

Wrong options:

• again: The word 'again' implies repetition, which does not fit the context of introducing a new action.
• and: The word 'and' is a conjunction that connects ideas but does not serve the purpose of adding information in this context.
• so: The word 'so' indicates a consequence or result, which does not align with the intention of adding another action.

Correct answer: redeem

Explanation: The word 'redeem' fits grammatically and contextually as it refers to the action of using frequent flyer miles to obtain tickets. It aligns perfectly with the context of the sentence.

Meaning: To 'redeem' means to exchange something, in this case, frequent flyer miles for tickets.

Wrong options:

• market: The word 'market' refers to a place or system for buying and selling, which does not fit the context of using miles for tickets.
• amend: The word 'amend' means to change or modify, which is not relevant to the action of using miles.
• purchase: The word 'purchase' implies buying something outright, which does not accurately describe the process of using miles.