Cats received a fish reward whenever they maneuvered themselves out of an enclosed puzzle box. with successive trials, the cats escaped from the box with increasing speed. this illustrates:

This illustrates the law of effect.
Accoding to the law of effect. responses that resulted in satisfyin effect for the doers will provoke a similar situation to happen again in the future.
In this particular case, since the reward provide satisfying effect for the cats, the cats will more likely to repeat the same manuever under similar situation.

The correct answer is a

To solve their problems, mesopotamians used irrigation, a way of supplying water to an area of land. to irrigate their land, they dug out large storafe basins to hold water supplies these ditches brought water to the feilds. to protect their feilds from flooding, farmers built up the banks of the tigris and euphrates.hope ths !