Answer:
<h2>g > 0</h2>
Step-by-step explanation:
Among the options, the most reasonable is g > 0, because the movement of a pendulum depends on gravity, it's the reason of the movement actually, because the gravity is the acceleration of such oscillation.
Moreover, without gravity there weren't any pendulum movement, remember that acceleration refers to the change of velocity, which is what happens in all oscillations of a pendulum. If you think about it, you will realize that a pendulum stops in extreme points, then goes back, this movement tend to be periodical, because the gravity is approximately constant basically.
Therefore the right answer is g > 0.
