The theory of eugenics proposes that improvement of the human race can best be obtained by

a.) controlling selective breeding.
b.) developing greater intercultural awareness.
c.) controlling the natural environment.
d.) developing greater international cooperation.

answer: b: experiments that showed that all cells are similar in how they metabolize and in their composition

explanation:

ans.

gregor john mendel is known for study of inheritance in pea plants. he used garden pea plant for his study, having alternative traits for various characters. he performed cross-breeding in pea plants to check how characters are transmitted between parents to offspring, such as cross between pure tall and pure dwarf plant. mendel studied the inheritance patterns in pea plants for various generations.

thus, the correct answer includes options and f).