The most appropriate definition among these option is the chemistry of hydrocarbons and their derivsatives is reffered to as organic chemistry.

We can conclude from a given depiction of a carbonic compound whether it is a saturated compound or unsaturated compound by looking for the type of (carbon-carbon) covalent bond it forms . if it forms at least one double or triple covalent bond it is saturated else it is unsaturated.

Due to catenation carbon is able to form bonds by combining to itself and tetravalency enables it to form bonds with monovalent ,divalent, trivalent so that with most other elements that gives rise to a large number of compounds .

Silicon also shows the self linking property it forms compounds with Hydrogen which have chains upto 7 or 8 atoms.

Carbon carbon bonds in case of saturated carbonic compounds is saturated as these bonds are more stable than unsaturated compounds.

We can conclude from a given depiction of a carbonic compound whether it is a saturated compound or unsaturated compound by looking for the type of (carbon-carbon) covalent bond it forms . if it forms at least one double or triple covalent bond it is saturated else it is unsaturated.

We can conclude from a given depiction of a carbonic compound whether it is a saturated compound or unsaturated compound by looking for the type of (carbon-carbon) covalent bond it forms . if it forms at least one double or triple covalent bond it is unsaturated else it is saturated.

The valency of carbon is 4 that is why it is called a tetravalent atom.

We can conclude from a given depiction of a carbonic compound whether it is a saturated compound or unsaturated compound by looking for the type of (carbon-carbon) covalent bond it forms . if it forms at least one double or triple covalent bond it is unsaturated else it is saturated.

Silicon also shows the self linking property it forms compounds with Hydrogen which have chains upto 7 or 8 atoms.