Question

which phrase describes a feature of a mercator projection?
○ is least commonly used
○ sizes most features to scale
○ presents longitude lines as parallel
○ shows most accurately near the prime meridian

Explanation:

The Mercator projection is a cylindrical map projection. It has distinct features: it is widely used (so "is least commonly used" is wrong), it distorts the size of features (especially near the poles, so "sizes most features to scale" is incorrect), and its accuracy is highest near the equator, not the prime meridian. A key defining feature is that it represents longitude lines as parallel straight lines.

Answer:

presents longitude lines as parallel