Quarterly compounding implies that interest is compounded $$times per year.

You have deposited $$1,200$ into an account that will earn an interest rate of $15\%$ compounded semiannually. How much will you have in this account at the end of seven years?

$$3,963\mathrm{.}52$

$$3,302\mathrm{.}93$

$$2,642\mathrm{.}34$

$$3,633\mathrm{.}22$