Answer: A. saturated
Step-by-step explanation:
Red meats are consist of saturated fatty acids which can harm heart and GI tract of a person.
High saturated fat present in red meat blood cholesterol and high levels of Low-density lipoprotein increase the risk of heart disease.
Saturated fatty acids have double bond in there structure which are not easily breakable and digestable, which later damage human helath.
Hence, the correct option is A.