Answer:
Option D. The firm takes actions to improve the stability of its day-to-day operations.
Step-by-step explanation:
The business risk of a company is comprised of financial and operational risks. The improvement of day to day stability of operations is related to reduction in the operational risk which is the correct option here.
Increasing fixed costs increases the business risk however changing the operations doesn't well describes whether they had reduced or increased the business risk. Furthermore, the shift in sales strategy is also not clear whether the contribution has been increased or not which is the sign of reduction in business risk. So the right option is option D.