The correct answer is: B. Methyl
A methyl group is a chemical group with the formula -CH3. It is the simplest alkyl group and consists of a single carbon atom bonded to three hydrogen atoms. Methyl groups are very common in organic chemistry and are often used as substituents on other molecules.
The hydrocarbon family is a group of organic compounds that are composed only of carbon and hydrogen atoms. The simplest hydrocarbon is methane, which has the formula CH4. Each member of the hydrocarbon family differs from the previous member by a group of one carbon atom and two hydrogen atoms. This group is called a methyl group.
For example, the hydrocarbon ethane has the formula C2H6. It is formed by adding a methyl group to methane. The hydrocarbon propane has the formula C3H8. It is formed by adding another methyl group to ethane. And so on.
The hydrocarbon family is very large and includes many different types of compounds. Some of the most common hydrocarbons are methane, ethane, propane, butane, pentane, hexane, heptane, octane, nonane, and decane.
Hydrocarbons are found in natural gas, petroleum, and coal. They are also used as fuels, solvents, and lubricants.