To solve this problem, we need to identify which glucose transporter is insulin-dependent. Let's analyze each option:$\newline \bullet$GLUT I:$\newline$ - GLUT I is a glucose transporter that is widely distributed in fetal tissues and is responsible for the basal glucose uptake.$\newline$ - It is not insulin-dependent.$\newline \bullet$GLUT II:$\newline$ - GLUT II is found in liver, pancreas, and kidney cells and plays a role in glucose sensing and uptake.$\newline$ - It is not insulin-dependent.$\newline \bullet$GLUT III:$\newline$ - GLUT III is primarily found in neurons and the placenta, facilitating high-affinity glucose uptake.$\newline$ - It is not insulin-dependent.$\newline \bullet$GLUT IV:$\newline$ - GLUT IV is found in adipose tissues and striated muscle (skeletal and cardiac) and is responsible for insulin-regulated glucose uptake.$\newline$ - It is insulin-dependent, meaning its activity is stimulated by insulin.$\newline$Therefore, the correct answer is GLUT IV, which is Option 4.