The correct answer is (c) 75 years.
According to Budget 2021-22, senior citizens (i.e., individuals who are 75 years of age or older) are exempted from filing income tax returns if their total income is less than Rs. 5 lakhs. This exemption is available to both salaried and non-salaried senior citizens.
The exemption is available for both income from salary and income from other sources, such as interest, dividend, and capital gains. However, the exemption is not available for income from business or profession.
To claim the exemption, senior citizens need to submit a declaration along with their income tax return. The declaration should state that their total income is less than Rs. 5 lakhs and that they are not liable to pay income tax.
The exemption for senior citizens is a welcome move by the government. It will help to ease the compliance burden on senior citizens and will also provide them with some financial relief.