40 acres in total, but the park in Quincy was set on 13 acres
Explanation:
John Adams was a second president of the United States, and also a very good in law, and he had in his possession one big property of 40 acres, in the state of Massachusetts, the property known under the name of Peacefield. He was born in Massachusetts, where he also inherited his big property. Those 40 acres belonged to his great grandfather, who moved to England.
I am pretty sure that the answer is dry, cracked earth.
Explanation
The other three don't really make sense. I live somewhere where there are always droughts and what happens is that the earth becomes dry and may/will crack.