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which of the following explains why planets in our solar system are revolving around the sun?

select one:
a. the gravitational pull of the sun keeps the planets in their orbits.
b. the high pressure inside the sun attracts all planets towards the sun.
c. the nebular mass originally exploded to throw planets around the sun.
d. the high amount of energy released from the sun the planets revolve.

Which of the following explains why planets in our solar system are revolving around the sun?  

Select one:

a. The gravitational pull of the sun keeps the planets in their orbits.

b. The high pressure inside the sun attracts all planets towards the sun.

c. The nebular mass originally exploded to throw planets around the sun.

d. The high amount of energy released from the sun helps the planets revolve.

Explanation:

hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.  

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.