In the study that the fbi did on examining the physical characteristics of hair, what percentage of the “matches” were not really matches at all?

According to newton's second law, when the same force is applied to two objects of different masses, a the object with greater mass will experience a great acceleration, and the object with less mass will experience an even greater acceleration, b. the object with greater mass will experience a smaller acceleration, and the object with less mass will experience a greater acceleration, c. the object with greater mass will experience a greater acceleration, and the object with less mass will experience a smaller acceleration, d. the object with greater mass will experience a small acceleration, and the object with less mass will experience an even smaller acceleration.

Iwill give brainliest if you answer right : )

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?