Final answer:
The true statement about longitude and latitude is that lines of longitude cross the Equator at right angles. Lines of longitude are not parallel to the Equator and the 0° line of latitude refers to the Equator, not a longitude line through Greenwich.
Step-by-step explanation:
The question is asking which statement about longitude and latitude is true. When considering the options provided, the correct answer is option B: Lines of longitude cross the Equator at right angles. Lines of longitude are imaginary lines that run from the North Pole to the South Pole and are used to determine a location's east or west position from the Prime Meridian, which is located at 0° longitude and passes through the Royal Observatory in Greenwich, England. Lines of longitude are also known as meridians and differ from lines of latitude, which are parallel to the equator. The Prime Meridian divides the Earth into the Eastern and Western Hemispheres. Option A is incorrect because lines of longitude are not parallel to the Equator; instead, they converge at both poles. Option C is incorrect because the 0° line of latitude is known as the Equator, not the 0° line of longitude.