Explanation:

- In the scenario, Dinesh is expected to produce 50 units per day.

- He actually produced 48 units.

- The deviation is calculated as the actual output minus the standard output.

- Deviation = 48 (actual) - 50 (standard) = -2

Option Explanation:

1. -2: Correct, as the actual production is 2 units less than standard output.

2. +2: Incorrect, as Dinesh did not exceed the standard output.

3. 98: Incorrect, as this does not relate to the difference in production units.

4. None of the above: Incorrect, as option 1 is correct.

The correct Answer is Option: 1, -2