Question

lines of latitude a. run from north to south b.start greenwitch,greenland c. are parallel to the equator d.indicate magnetic declination.

Answer 1

The answer is C.
they run east to west which makes them parallel to the equator and they measure distances north and south. 
I hope this helps.

Answer 2

Lines of latitude are parallel to the equator. This is a big part of the reason that they are often called parallels of latitude.