Normal faults form at divergent boundaries when they undergo ..?
Shearing
compression
tension

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.

there are no contact forces mentioned on the list of choices that you've provided.

3. dark matter

empty space could also be a simple vacuum