Final answer:
The correct entry to record the investment in bonds by Watt Company is a debit to Held-to-Maturity Securities at $315,000.
Step-by-step explanation:
The correct entry to record the investment in bonds by Watt Company would be:
C. a debit to Held-to-Maturity Securities at $315,000
This entry reflects the cost of the bonds purchased. It is important to note that when bonds are purchased at a premium, as in this case, the premium is not recorded separately but is included in the total cost of the investment.