Which step in the diagram below shows the inheritance of acquired traits as proposed by Lamarck?

Lamarck proposed that organisms could pass on traits acquired during their lifetime to their offspring. In a diagram illustrating this concept, the step that depicts an organism developing a new trait due to environmental changes or use (such as an animal stretching its neck to reach higher leaves) would represent the inheritance of acquired traits. This idea contrasts with Darwin's theory of natural selection, which emphasizes genetic inheritance rather than acquired characteristics.