Which characteristics of the planets in our solar system increases as the distance from the sum increases?
1) equatorial diameter
2) eccentricity of orbit
3) period of rotation
4)period of revolution

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.