In the given question, an idiom/phrase highlighted in bold is given in a sentence. Choose the most suitable meaning of the idiom/phrase. You must not waste your leisure time doing nothing, rather you should engage yourself in such activities that will blow off steam and recharge you for the future endeavours.

The idiom ?blow off steam? means to express one?s anger, usually noisily and harmlessly, thereby relieving one?s tension. The above sentence states that one should not waste one?s time and utilise it in releasing negative energies to get charged up. Only option 1 goes with this meaning, hence option 1 is correct.