The Use the drop-down menus to complete the statements.
of light is the rate at which light travels through empty space, or about 300,000 km per second.
A light-year is a measurement of
The distance between stars is measured in light-years rather than in miles or kilometers because the distance
between stars

answer: option d : 3.85 units

step-by-step explanation: in the given figure the blue line is diameter   .the diameter is the blue line which equals 7.7 units.radius is half of diameter .radius = 7.7÷2=3.85 units.

option d is the right answer.

explanation:

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radiative zone

explanation    

radiative zone is the layer of the sun which energy is transferred away from the core by radiation. although, the core is the only part of the sun that produces an appreciable amount of heat through fusion. in fact, 99% of the energy produced by the sun takes place within 24% of the sun's radius.