Final answer:
In the presence of acid and heat, the more effective dehydration reaction will occur in a tertiary alcohol.
option c is the correct
Step-by-step explanation:
In the presence of acid and heat, the more effective dehydration reaction will occur in a tertiary alcohol. This is because the mechanism of dehydration involves the loss of a water molecule from the alcohol, creating a carbocation intermediate. A tertiary carbocation is more stable than primary or secondary carbocations due to the presence of more alkyl groups, which can stabilize positive charge through inductive and hyperconjugation effects.