The function of Initiation factor $3($IF$-3)$ is:Group of answer choices$1.$ To stabilize the LOS subunit and enable it to bind to mRNA at recognition site$\mathrm{.}2.$ To check for the accuracy of the first charged tRNA$\mathrm{.}3.$ To recognize the Shine$/$Dalgarno sequence by complementary base pairing$\mathrm{.}4.$ To bind the charged initiator tRNA and deliver it to the A site of the $30$S ribosome$\mathrm{.}5.$ To prevent charged tRNA from entering the A site of the $30$S ribosome.