A simple pendulum with mass m $=1\mathrm{.}3$ kg and length L $=2\mathrm{.}59$ m hangs from the ceiling. It is pulled back to an small angle of $=11\mathrm{.}5$ from the vertical and released at t $=0.$

$7)$

Which of the following would change the frequency of oscillation of this simple pendulum?

increasing the mass

decreasing the initial angular displacement

increasing the length

hanging the pendulum in an elevator accelerating downward