Answer:
The correct answer is option A, that is, treating inherited diseases.
Explanation:
Genetic testing comprises testing the DNA, that is, the chemical database, which conducts instructions for the functions of the body. Investigation of genes can demonstrate modifications in the genes, which may lead to a disease or illness.
If someone is exhibiting signs of a disease, which may be a result of genetic modifications, also known as mutated genes. Then in such cases, the examination of genes can show if one is exhibiting a suspected disorder. For example, genetic testing may be done to confirm a diagnosis of Huntington's disease or cystic fibrosis.
