Answer: Option (a) is the correct answer.
Explanation:
Alkynes are the hydrocarbons, that is, they contain only atoms of carbon and hydrogen. Their general chemical formula is [tex]C_{n}H_{2n-2}[/tex], where n is a whole number.
A compound that contains a double or triple bond is known as an unsaturated compound. An alkyne contains a triple bond and it is also an unsaturated compound.
Thus, we can conclude that alkynes are hydrocarbons that have at least one triple bond between carbon atoms.
