The height $s$ of a ball (in feet) at time $t$ (in seconds) is given by the formula $s(t) = 64 - 16(t - 1)^2$. This function is graphed below on the interval $0 \leq t \leq 3$.

Which option best describes the behavior of the ball on the time interval $0 < t < 1$?
? The ball is rising. The ball is falling. The ball changes direction. The ball is released. The ball hits the ground.

Which option best describes the behavior of the ball on the time interval $1 < t < 3$?
? The ball is rising. The ball is falling. The ball changes direction. The ball is released. The ball hits the ground.

What occurs at the instant $t=1$?
? The ball is rising. The ball is falling. The ball changes direction. The ball is released. The ball hits the ground.