Abstinence : Indulgence :: Economy : ?

• Correct Answer: ক) Waste.

- Abstinence is the opposite of Indulgence,
- So, Economy is the opposite of Waste.

• Abstinence
- Bangla Meaning: পরিহার।
- English Meaning: The practice of abstaining from something.

• Indulgence
- Bangla Meaning: প্রশ্রয়; আশকারা; লাই; অনুবর্তন; পরিতোষণ; সন্তোষসাধন।
- English Meaning: the act of having something enjoyable.

• Economy
- Bangla Meaning: মিতব্যয়িতা, সাশ্রয়, অর্থনীতি।
- English Meaning: thrifty and efficient use of material resources : frugality in expenditures, the structure or conditions of economic life in a country, area, or period.

• Waste
- Bangla Meaning: অপচয়িত হওয়া।
- English Meaning: an unnecessary or wrong use of money, substances, time, energy, abilities, etc.

• Other Options:
খ) Luxury
- Bangla Meaning: বিলাসবহুল, বিলাসিতা।
- English Meaning: something expensive that is pleasant to have but is not necessary.
- Not a direct antonym of "economy" - luxury is about lifestyle, not spending habits.

গ) Spending
- Bangla Meaning: খরচ; অতিবাহন; অতিপাত; নির্বাহ।
- English Meaning: the money that is used for a particular purpose.
- Related to economy but not its opposite.

ঘ) Frugality
- Bangla Meaning: সাবধান; মিতব্যয়ী; হিসাবি; সামান্য মূল্যের।
- English Meaning: the quality of being careful when using money or food.
- Synonym of “Economy,” not its opposite.

Source: Merriam-Webster Dictionary, Accessible Dictionary, Cambridge Dictionary.