Question

In ancient time, which of the following device(s) have been used to keep track of time?

• A. Hourglass
• B. Candle clocks
• C. (a) and (b) above.

Answer 1

The correct option is C (a) and (b) above.

In ancient time following devices have been used to keep track of time:

1. Water clock
2. Sundial
3. Hourglass
4. Candle clock

Therefore, both Hourglass and Candle clocks have been used in ancient time to keep track of time. Hence, option (c) is the correct choice.