Which code indicates an extra seat?

Which code indicates an extra seat?

• A. A
• B. JMP
• C. EXST
• D. INF

Answer: (C)

The key idea is how codes signal changes in seating rather than just who is seated. EXST clearly implies an additional seat — it's a direct shorthand for an extra seat. In a seating or manifest context, you want a code that flags that there is more seating available or needed beyond the standard count, and EXST serves that purpose. The other codes don’t carry that meaning: A usually denotes a passenger type like adult but doesn’t indicate any change to the number of seats; JMP isn’t a seating designation at all; INF refers to an infant, which has its own set of seating rules and does not signify an extra seat.

The key idea is how codes signal changes in seating rather than just who is seated. EXST clearly implies an additional seat — it's a direct shorthand for an extra seat. In a seating or manifest context, you want a code that flags that there is more seating available or needed beyond the standard count, and EXST serves that purpose. The other codes don’t carry that meaning: A usually denotes a passenger type like adult but doesn’t indicate any change to the number of seats; JMP isn’t a seating designation at all; INF refers to an infant, which has its own set of seating rules and does not signify an extra seat.