Dark matter can be described as matter that
a. does not exert gravitational force but can be directly detected with light
b. cannot be directly detected and does not emit or absorb light
c. exerts gravitational force and makes up most of the stars and planets as 3% of the universe

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

no. bullets are macro objects. wave nature is for light waves, extremely tiny particles. if a light particle was the size of your finger, the bullet would be the size of the universe. so basically, that huge difference in size makes the wave nature of matter insignificant.