The correct option is B Neutralization
A neutralisation reaction is when an acid and a base react to form water and a salt.
The neutralisation of a strong acid and strong base has a pH equal to 7.
The neutralisation of a strong acid and weak base will have a pH of less than 7, and conversely, the resulting pH when a strong base neutralises a weak acid will be greater than 7.
When a solution is neutralised, it means that salts are formed from equal weights of acid and base.