Because of his _ habits, he could not save much money.

Explanation

OPTION A: Extravagant means spending too much money, or using too much of something. Therefore, he could not save much money due to his extravagant habits. Hence, A is the correct option. OPTION B: Frugal means being careful about spending money or using things. OPTION C: Unsavoury means tasteless, unpleasant in taste or smell.OPTION D: Bad means not good in any manner or degree.