To solve this problem, we need to identify who disapproved the embryological support for evolution. Let's analyze the options:$\newline \bullet$Alfred Wallace:$\newline$ - Alfred Wallace was a naturalist who independently conceived the theory of evolution through natural selection.$\newline$ - He did not specifically disapprove embryological support for evolution.$\newline \bullet$Charles Darwin:$\newline$ - Charles Darwin is known for his theory of evolution by natural selection.$\newline$ - He used embryological evidence to support his theory.$\newline \bullet$Oparin:$\newline$ - Oparin was a biochemist known for his work on the origin of life, not specifically on embryology or evolution.$\newline \bullet$Karl Ernst von Baer:$\newline$ - Karl Ernst von Baer is known for his laws of embryology.$\newline$ - He criticized the recapitulation theory, which was an embryological concept used to support evolution.$\newline$ - Therefore, he disapproved the embryological support for evolution.$\newline$Thus, the correct answer is Option 4: Karl Ernst von Baer.