I think it is D had no effect
Answer:
The Sierra Madre Oriental is located at number( 3 )on the map above; this is easy to remember because “oriental” is the Spanish word for “EAST or EASTERN.”
Explanation:
You are conducting a case study. It is a procedure or record of research in which itemized thought is given to the improvement of a specific individual, gathering, or circumstance over some stretch of time.
Essentially, a case study is an inside and out investigation of a specific circumstance as opposed to a broad factual review. It is a technique used to limit an exceptionally expansive field of research into one effortlessly researchable subject.
The answer is secret service
