Concept:Lamarck's theory is known as the "inheritance of acquired characters."
Explanation:Lamarck believed that organisms develop new traits during their own lifetime in response to environmental needs.
He gave the example of a giraffe stretching its neck to reach leaves, resulting in a longer neck.
According to Lamarck, such traits acquired through use or disuse of organs are not lost after death.
He proposed that these acquired characters become part of the organism's hereditary material.
Thus, the offspring inherit the modifications that their parents gained during life.
This idea is the central basis of Lamarck's evolutionary theory.
Modern genetics disproved this, but the theory remains historically important.
The key point is that acquired characters are transmitted to the next generation.
Answer:B. organisms pass on acquired characters to their offspring