Answer: 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.