Which of the following is true about a hydrocarbon with the suffix -yne?

A hydrocarbon with the suffix -yne indicates that it contains at least one triple bond. This suffix is characteristic of alkynes, which are unsaturated hydrocarbons specifically defined by the presence of one or more carbon-carbon triple bonds in their structure.

The nature of alkynes allows them to exhibit different properties and reactivity compared to alkanes (which contain only single bonds, represented by the suffix -ane) and alkenes (which contain at least one double bond, designated by the suffix -ene). Additionally, alkynes typically participate in reactions that are distinctive due to the presence of the triple bond, such as undergoing hydrogenation or addition reactions, which alkanes and alkenes do not.

Hydrocarbons that are aromatic in nature have a different classification based on their ring structure and conjugated pi systems, usually indicated by terms such as "benzene" or "aromatic" rather than a suffix like -yne.

Therefore, the indication of -yne clearly identifies the presence of a triple bond, making it the correct answer.