The scientist Jean Baptiste Lamarck proposed that if an individual acquired a particular characteristic, such as strength from lifting weights, this characteristic would be inherited by the organism's offspring. This same idea is also part of a more ancient idea, the idea of .

Pangenesis

Explanation:

The pangenesis is one of the type of hypothetical mechanisms that helps in explaining the various types of characteristics that is inherited from the offspring and also explained about the various types of tiny particles in our body which is own as gem-mules.

According to the given question, the scientist Lamarck proposed the characteristics, strength of the organisms and the same idea is also refers to the part of the ancient idea about the pangenesis.  

 Therefore, Pangenesis is the correct answer.