Which of the following is not true about darwin’s book on the origin of species?

a. he worked on the manuscript for three years.
b. it was successful.
c. it explained his theory of evolution.
d. it was based on his findings in south africa.

It was based on his findings in South Africa is not true about Darwin's book On the Origin of Species among the choices that are given in the question. The correct option among all the options that are given in the question is the last option or option "d". His work mainly circled around the Galapagos island of South America.

The answer is challenging and taxing because arduous means when something is hard and tiring and the excerpt provides clear detail why that's the answer