What must be true if a wave's wavelength is short? A
Its frequency is low.
B
It does not carry energy.
с
Its frequency is high.
D
The waves are visible.

im sure its A

Explanation:

as a general rule, scissors have blades less than 6 in (15 cm) long and usually have handles with finger holes of the same size. shears have blades scissors used to cut hair or fabric must be much sharper.

gets less