The passage is mainly about the Great Depression.
The answer is D, Soft-heartedness versus Soft-headedness
It's the last one. we know this because it talks about how even with the smart hands of a scientist, the plan is not completely foolproof, or safe
The sentence in which a singular possessive is formed correctly is A) Tiny Myers' dog ran away yesterday.
In B) it should be Smith's.
In C) it should be Brenda's.
In D) it should be Mr. Mosses'.