Build up of has been used to try to predict earthquakes.

a) creep meter
b) tiltmeter
c) friction
d)paper
e) seismoraph
f) plate techonics
g) fault
h) laser-ranging device

Build up of friction has been used to try to predict earthquakes.  Correct C

The friction of rocks used to predict earthquakes is a function of time, velocity of sliding, and displacement. These frictions are used for earthquake science predictions, including how fast ruptures will occur, the nature of ground shaking, and residual stress levels on faults

(bro she is ancient)

j < 14

j is jakes age

since jake is younger it makes his age less than his sisters

(if you meant she is 14)