The correct option is B 1883
August Weismann (1834-1914) proposed the germplasm theory in 1883. This theory is based on the concept that living bodies are formed of two different kinds of material i.e., the germplasm and the somatoplasm. The germplasm is responsible for the development of reproductive parts and somatoplasm develops body parts out of the germplasm. Thus, the correct answer is option B.