The correct option is D 15,600 dollars
Price of one ticket = 15.60 dollars
Number of people who joined the event = 1,000
Total money collected = 15.60 × 1000 dollars
To mulitply a number by 1000, we have to add three zeros to the right of the number.
⟹ 15.60 × 1000 = 15,600 dollars
Hence, total money collected = 15,600 dollars