The transfer $\mathrm{RNA}$ anticodon for the messenger $\mathrm{RNA}$ codon $\mathrm{G}-\mathrm{C}-\mathrm{A}$ is

The transfer $\mathrm{RNA}$ anticodon for messanger $\mathrm{RNA}$ codon $\mathrm{G}-\mathrm{C}-\mathrm{A}$ is

$\mathrm{C}-\mathrm{G}-\mathrm{U}$, because in anticodon of $\mathrm{RNA}$,

$\mathrm{G}$ replaced by $\mathrm{C}$
$\mathrm{C}$ replaced by $\mathrm{G}$
$\mathrm{A}$ replaced by $\mathrm{U}$

Here, C(cytosine) forms triple bond with G (guanine) and A (adenine) forms double bond with U (uracil).