The dominant hand is ____ than the non-dominant hand:

• A. 5% stronger
• B. 10% stronger
• C. 5% weaker
• D. 10% weaker

Answer: (B)

The dominant hand tends to be stronger because it is used more often and more skillfully, which leads to use‑dependent improvements in muscle strength and neuromuscular control. This greater use strengthens the muscles and the brain’s control over that hand, so it generally performs tasks with more force. In many populations, the difference in grip strength or overall strength between the dominant and non‑dominant hand is about 10%, a figure that exam writers commonly use as a standard approximation. So saying the dominant hand is about 10% stronger captures the typical, practical difference seen in everyday function. The other options imply the dominant hand is weaker or understate the usual difference, which doesn’t fit the common pattern of strength asymmetry.