According to the Guinness Book of World Records, the longest drumming marathon by an individual lasted for 84 hours. How many seconds did he play the drums?

A. 3,024,000

B. 604,800

C. 151,200

D. 302,400

A. 3,024,000

The correct answer is A. 3,024,000. To find the number of seconds, you would multiply 84 hours by 60 minutes per hour (84 x 60 = 5,040 minutes) and then multiply that by 60 seconds per minute (5,040 x 60 = 302,400 seconds).