Answer
(A)
Work Step by Step
x and t are in a linear relationship, $x=mt+b.$
$m=\displaystyle \frac{\Delta x}{\Delta t}$
$m=0.2$ is positive, so x increases over an increase in time.
$m$ is constant, so the rate of change of position in time
(known as velocity, whose magnitude is speed) is constant
The object is in motion, with fixed speed. (A)
