Final answer:
Lamarck's evolutionary theory included the idea of inheritance of acquired characteristics, whereas particulate inheritance of traits was not part of his concept and was introduced later by Mendel. Option A.
Step-by-step explanation:
The component that was not a part of Jean-Baptiste Lamarck's idea of evolution is A.
particulate inheritance of traits. Lamarck's evolutionary theory, often discredited, is best known for advocating the inheritance of acquired characteristics, a concept that implies that traits an organism develops during its lifetime could be passed on to its offspring.
The ideas of a dynamic chain of being and spontaneous generation were also part of Lamarck's views to varying extents; however, the understanding of genetics as we know it today, with the concept of particulate inheritance came much later with the rediscovery of Gregor Mendel's work.
Option A,