Explanation
A verb is used to express an occurrence, action , or state. It is the grammatical centre of the predicate in a sentence.
An auxiliary verb is a verb which gives is used in the formation of tenses, moods, tones, etc.
A modal auxiliary verb is used to show a capability, necessity, possibility or willingness.
Option B is correct as more than one person is being talked about (the minister and the secretary and 'planned' tells us that the action is of the past.
Other options are wrong as the subject is not singular.
Complete the following passage by choosing the appropriate option given below:
Please disable the adBlock and continue. Thank you.