D.20 13

There is a key sentence in the question that answers the question: how bold people are, how productive the land will be. This sentence comes from his age of 40.

"How bold people are, how productive the land is" is the most famous sentence during the Great Leap Forward. The Great Leap Forward occurred between 1958 and 1960. At that time, he was 40.

It can be inferred that this person was born in 19 18- 1920.

The man finally lived to be 95.

It can be judged that the death year of this person is 20 13-20 15.

3. Back to the answer, D.20 13 is the final answer.