Mendel's studies about inheritance was recognized only after his death. During his time, his works were disproved. His works were not fully understood by the other scientists when he presented them and the paper that was used to published the same was not well-known. These evidences of his works were not read by most of the people of his time. The methods he used to present his work was not familiar to most of the scientist of his time. He was not rich and famous. He was born from a poor farming family.
Answer - d. was not recognized for his work until after his death