Which country along the Prime Meridian is the southernmost among the eight?

• A. Ghana
• B. Mali
• C. Burkina Faso
• D. Algeria

Answer: (A)

The main idea here is how to compare locations along the Prime Meridian, which is the 0° longitude line that runs from the North Pole to the South Pole. To find the southernmost country along this line, you look at where the meridian intersects each country and compare those latitudes—the smaller the latitude number (closer to the equator), the farther south the place is.

Along this line, Ghana sits at roughly 5°N in West Africa, near the Atlantic coast. The other countries listed intersect the Prime Meridian farther north: Mali and Burkina Faso lie well north of that band, and Algeria is even farther north in North Africa. So Ghana is the southernmost among these along the 0° longitude line.