Statement: "Fly X Airways whenever you decide to go places. Our fares are less than train fares." — an advertisement.\nAssumptions:\nI. People prefer to travel by air when the fares are reasonably low.\nII. Other airlines charge higher fares than X Airways.

Introduction / Context:
This verbal reasoning item tests whether an assumption is a necessary, tacit belief underlying an advertisement's persuasion. The ad says: "Fly X Airways… Our fares are less than train fares." The persuasive move is: because airfares are lower than train fares, you should choose this airline for your travel. We must find which hidden beliefs must be true for the pitch to work.

Given Data / Assumptions:

• Statement compares X Airways' fares with train fares.
• Goal is to motivate people to fly X instead of taking the train.
• No information is given about other airlines' prices.

Concept / Approach:
In statement–assumption questions, an assumption is implicit if, without it, the argument loses its force. We check which options are required for the reasoning to be persuasive, not merely compatible.

Step-by-Step Solution:
1) The ad appeals to lower cost versus trains to persuade switching to air travel.2) This presupposes that many people will prefer air if it becomes cheaper or comparably priced — i.e., price sensitivity affects the mode choice.3) Assumption I captures exactly that: people prefer to travel by air when fares are reasonable.4) Assumption II talks about other airlines being costlier than X. The ad never references other airlines; the comparison is airline vs train, not airline vs airline.5) Therefore, II is not necessary to make the persuasion work.

Verification / Alternative check:
Even if others have identical or cheaper fares, the statement still persuades against trains based on air-versus-train pricing. Hence II is not required.

Why Other Options Are Wrong:

• Only II: Not referenced or needed.
• Either I or II: II is irrelevant; I is needed.
• Neither: I is required for price-based persuasion.
• Both: II adds nothing necessary.

Common Pitfalls:
Confusing sufficiency with necessity: that II might help marketing does not make it an assumption of this argument.

Final Answer:
Only assumption I is implicit.