Answer:
<em>The correct option is C) happened by chance</em>
Explanation:
Mutations can be described as any changes which occur in the DNA of an organism. Mutations can be natural or induced through methods like the use of chemicals.
Mutations occur randomly and happen by chance. Hence, option C is correct.
Other options like option A are false because mutation is the sudden change in the genome of an organism. Hence, mutations will not cause the teeth to grow longer until they reach an optimal length.
B) because sitting isn't really moving
When penicillin was first developed in 1940, many doctors regarded it as a Panacea that would end all infectious diseases.
I think tap dancing is an aerobic exercise.
