Which proposed rule change makes the most sense in terms of increasing action & quicken the pace of the game?

[RealGM Polls]

1. Pitch Clock
2. Limit the Disengagments from the rubber to two
3. Hitters to be \"alert\" with 8-seconds to go on the clock
4. Having only two infielders on each side of second base
5. Increasing the size of the bases from 15 inches to 18 inches
6. Adopt all of the proposed changes
7. Don\'t make any rule changes