What is the most logical next event?

How to bowl with reactive bowling balls
Insert your fingers into the ball.
If you're right-handed, slide the middle and ring fingers of your hand hand into the upper two finger holes. If you're left-handed, insert the fingers of your left hand.

pick from the following.
a). The finger holes should come to a stop right around the first knuckle. This grip will be most effective for bowling precise angles.
b). The sixth finger that's keeping the ball still is on the top. The hole diameter and length will depend on your bowling technique.
c). Thumb and forefinger of your right hand should slide into the upper left fingers of your right hand. Also slide your thumbs into the side holes of your ball.
d). Push your index and middle fingers into the ball as if you're trying to make a fist, to a 45 degree angle. Move your index finger into the ball.
a).