Answer:
The Journal entries are as follows:
(i) On March 1,
Prepaid insurance A/c Dr. $24,600
    To cash A/c                $24,600
(To record the purchase of insurance in advance)
(ii) On December 31,
Insurance expense A/c Dr. $20,500
       To Prepaid insurance      $20,500
(To record the insurance expense)
Workings:
Insurance expense:
= $2,050 × 10 months (From March 1 to December 31)
= $20,500