ELSS (Equity Linked Savings Scheme) is a tax-saving mutual fund that invests primarily in equity shares. Investments up to Rs. 1.5 lakh per year qualify for deduction under Section 80C of the Income Tax Act. ELSS funds have a mandatory lock-in period of 3 years, the shortest among all Section 80C instruments. Option A incorrectly says 'Tax Saving' instead of 'Savings', while options B and D incorrectly use 'Share'.