Answer:
a. True
Explanation:
Based on the information given the required adjusting journal entry will includes a $4,000 DEBIT TO UNEARNED REVENUE reason been that we were told that the company carried out 20 days of work out of 30-day contract before the end of the year which means that the company has earned an UNEARNED REVENUE by the end of the year of the amount of $4,000 calculated as ($6,000 * 20 days /30 days) which is why the adjusting Journal entry would includes a $4,000 DEBIT TO UNEARNED REVENUE.