Which instrument monitors vertical movement of a fault?

a.
seismograph
c.
creep meters
b.
tiltmeter
d.
laser range devices

Tiltmeter

Explanation:

Faults are like fracture in Earth rocks where the rocks move with respect to each other along the break. In vertical fault this movement is up or down.

A tiltmeter is used to measure this movement.

A seismograph is used to measure the intensity of earthquake. Creep meters are used to measure the horizontal movement of fault. Laser range devices are used to measure distances.

carla slowed down in the beginning of her trip, stopped, and then sped up