The following alcohol is a tertiary alcohol. Hence, option C is correct.
What is primary alcohol?
A primary alcohol is a compound in which a hydroxy group, ‒OH, is attached to a saturated carbon atom which has either three hydrogen atoms attached to it or only one other carbon atom and two hydrogen atoms attached to it.
Here, the carbon atom holding the OH group is attached directly to three alkyl groups.
Hence, the following alcohol is a tertiary alcohol.
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