Final answer:
Phosphoric acid acts as a dehydration catalyst in the elimination reaction of 3.3 Dimethyl 2 Butanol.
Step-by-step explanation:
The correct answer is A) Dehydration Catalyst.
Phosphoric acid acts as a catalyst in the elimination reaction of 3.3 Dimethyl 2 Butanol. In this reaction, a molecule of water is removed (dehydration) from the 3.3 Dimethyl 2 Butanol compound to form the corresponding alkene.