[Q]: Which of the following solutions is better for the following goal:
To make water run not too fast in a farm setting.

[A]: You make your dug terrace not to be too deep.

[Q]: Which of the following solutions is better for the following goal:
How to lower the volume on a TV with a remote

[A]: Aim the remote at the TV. Push the volume down button, and hold it down or tap it repeatedly until the desired volume is reached.

[Q]: Which of the following solutions is better for the following goal:
One is looking for an easy way to fire a crossbow.

[A]: One should look for a release mechanism.

[Q]: Which of the following solutions is better for the following goal:
How do I melt wax ?

[A]:
Put the wax in a pot and put the pot on the stove and heat the pot at low heat, stir gently the pot while the wax is melting.