HMS, BM EQ-Bank 47 MC For a person using crutches, which biomechanical principle is MOST important for energy efficient movement? Angular momentum Base of support Projectile motion Fluid resistance Show Answers Only \(B\) Show Worked Solution B is correct: A stable and appropriate base of support enables efficient force transfer and reduces energy expenditure Other Options: A is incorrect: Not primary principle in crutch gait efficiency C is incorrect: No projectiles involved in crutch walking D is incorrect: Not relevant to crutch-assisted movement