We should a void "burning the candle at both ends" otherwise it will make us suffer. The underlined portion indicates:

A Burning the candle fully
B both ends to be demolished
C wasting
D burning valuables

Correct Answer: wasting

Burn the candle at both ends. Exhaust someone's energies or resources by leading a hectic life. To engage in an activity, usually work related, from early morning until late at night.
Bissoy MCQ

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