Given that chord ef is a diameter of circle d, which of the following names a major arc? a. arc egc b. arc egf c. arc eg d. arc ecf

We know that
A major arc is an arc of a circle having measure greater than or equal to 180 degrees

therefore
arc EGF=180°> (because EF is the diameter)
arc ECF=arc EGF
arc ECF=180°

arc EGC=arc EGF+arc FC
arc EGC=180+arc FC
so
the arc EGC is > 180°

the answer is
A major arc is arc EGC

What is the question

The correct answer will be d. -4