Explanation:

- When Ram and Shawan work together, they complete the job in 5 hours.

- This means their combined work rate is 1/5 of the job per hour.

- Ram alone completes the job in 6 hours.

- Therefore, Ram's work rate is 1/6 of the job per hour.

- To find Shawan's work rate, subtract Ram’s rate from their combined rate: $(1/5-1/6)$.

- The difference is calculated as: $(6-5)/30=1/30$.

- Thus, Shawan’s work rate is 1/30 of the job per hour.

- This means Shawan alone can finish the job in 30 hours.

- Correct Answer: Option 1 - 30