What is the weight of the medicine ball for boys in the Barrow Motor Ability Test?

The correct option is 3 kg.

Explanation:
The Barrow Motor Ability Test (for boys) is a widely used test battery designed to measure the general motor ability of male students. One of the key test items in this battery is the Medicine Ball Put, which is used to measure arm and shoulder girdle strength and explosive power.

According to the standard specifications established by Harold M. Barrow for this motor ability test, the weight of the medicine ball used for testing boys (specifically high school and college boys) is 3 kg (or approximately 6 pounds).
For comparison, a lighter medicine ball of 1 kg is typically used for girls in similar motor ability evaluations.