5) 5-year term deposits
You can open a deposit at the post office and select tenures of 1, 2, 3 and 5 years. However, none give the tax benefit under Section 80C except the 5-year tenure deposit which offers a rate of 8.5% per annum.
The interest earned is subject to tax. Though it is payable on an annual basis, it is compounded quarterly.
Just like the 5-year deposit from the post office, tax-saving fixed deposits from banks are also eligible for a deduction under Section 80C. Do check with your bank to see what the rate of interest is.