A. Radius
A.
B. Ulna
B.
C. Clavicle
C.
D. Humerus
D.
Correct Answer: D
সঠিক উত্তর: D
Explanation
ব্যাখ্যা
The upper arm consists of only one bone, the humerus. The radius and ulna are bones in the forearm, while the clavicle (collarbone) connects the upper arm to the shoulder blade.