Genetic mutation changes the heritable phenotypic characters by altering the sequence of

The correct option is B The template of RNA synthesis
Genetic mutation is the basis of species diversity among all organisms. Mutations are changes in the genetic sequence, and they are a main cause of diversity among organisms. These changes occur at many different levels, and they can have widely differing consequences. Genetic mutation changes the heritable phenotypic characters by altering the sequence of the template (non-coding DNA strand) of RNA synthesis.

So, the correct answer 'The template of RNA synthesis'