Time zones are measured in relation to their distance from
a.
the north pole
b.
the atlantic ocean
c.
coordinated universal time
d.
the equator

Coordinated Universal Time

Explanation:

All time zones are measured from a starting point centered at England's Greenwich Observatory. This point is known as the Greenwich Meridian or the Prime Meridian. Time at the Greenwich Meridian is known as Greenwich Mean Time (GMT) or Universal Time.

Coordinated Universal Time

Explanation:

Coordinated Universal Time

answer; in the disk but not the halo;