The correct sequence of bones in the upper arm of a human is given in option 3: 1, 3, 4, 2. Let`s dissect each option to gain a better understanding.

Option 1: 1, 3, 2, 4

This option incorrectly places the phalanges (bones of the fingers) before the radius and ulna. The correct sequence would have the radius and ulna before the phalanges.

Option 2: 3, 1, 2, 4

This option incorrectly places the humerus (bone of the upper arm) before the radius and ulna. The correct sequence would have the humerus before the radius and ulna.

Option 3: 1, 3, 4, 2

This is the correct sequence. It starts with the humerus, followed by the radius and ulna, then the carpals and metacarpals, and finally, the phalanges.

Option 4: 3, 1, 4, 2

This option incorrectly places the carpals and metacarpals before the phalanges. The correct sequence would have the phalanges after the carpals and metacarpals.

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