The correct option is A 30
The total number of bones in upper arm of human is 30. Humerus (upper arm) radius and ulna (forearm) make up the arm, and in the palm there is a total of 27 bones; the wrist is made up of carpals (8), metacarpals (5) and 14 phalanges, 3 in each finger and 2 in thumb. So, along with 1 humerus and radius and ulna each 1, makes 30 bones.