Answer:
(D) credit Salaries Expense for $15,000
Explanation:
The normal entry to record adjusting entry of an expense is shown below:
Salary expense A/c Dr XXXXX
   To Salary payable A/c        XXXXX
(Being salary expense is adjusted)
And, the reversal entry would be
Salary payable A/c Dr $15,000 Â Â Â Â Â
    To Salary expense A/c $15,000
(Being reversal entry is passed)
The computation is shown below:
= $37,500 × 2 days ÷ 5 days
= $15,000