We know that,
acceleration (a) = final velocity(V)-initial velocity(U)/ Time taken(T)
The answer is A because water molecules don't have metallic bonding, and water is also polar, and it takes more time for the heat energy to break down the hydrogen bonds
Answer:
is a weak acid with a strong conjugate base 
is a weak base with a strong conjugate acid 
Explanation:
Weak acids do not completely dissociate in water to its distinctive ions, but instead forms conjugate bases; and ice versa with weak bases. The conjugate base has strong affinity for protons and vice versa.
I hope you found this explanation clear and easy to follow.