Assertion (A): People in high altitude areas, such as Ladakh, are unable to work long hours or do heavy labour. Reason (R1): The cold climate makes them lethargic. Reason (R2): Thin air makes them tired even when doing light tasks.

• If only reason 1 (R1) and not reason 2 (R2) is the reason for the assertion (A).
• If only reason 2 (R2) and not reason 1 (R1) is the reason for the assertion (A).
• If both (R1) and (R2) are reasons for the assertion (A).
• If neither (R1) nor (R2) is the reason for the assertion (A).