Consider the argument and decide which of the given assumptions is/are implicit Argument:
The BEST bus travels company has decided to increase its fare by 10%.
Assumptions:
1. Passengers may opt for other buses costing less than the BEST bus travels company.
2. The demand for the buses by passengers may remain unchanged even after the fare hike.​​

Argument:

The BEST bus travels company has decided to increase its fare by 10%.
Assumptions:
1. Passengers may opt for other buses costing less than the BEST bus travels company.
This is not necessarily assumed in the decision. If the company assumed this, it would be worried about losing passengers and might hesitate to increase fares.

This is not implicit.

2. The demand for the buses by passengers may remain unchanged even after the fare hike.

Otherwise, the decision could result in major losses.

This is implicit.

So, Only assumption 2 is implicit.

Thus, correct option is (b).