Explanation:

We know that,

1 year = 365 days

1 day = 24 hours

1 hour = 60 minutes

1 minute = 60 seconds.

Then, 1 year = 365 x 24 x 60 x 60 seconds. = 8760 x 3600

1 year = 31536000 seconds.

10 years = 31536000 x 10 = 315360000 seconds.

Hence, option 2 is the correct answer.