Answer:
a. After driver and consequently
Step-by-step explanation:
Commas are the punctuation marks/ signs that signify the correct grammatical form of writing sentences. These signs allow a writer to use correct forms of grammar in their writings.
In the given sentence,
"Harry was an incredibly bad driver, consequently, his wife usually drove"
the use of the comma/ pause will be just after the words “driver” and “consequently”. The comma presents/ signifies differing ideas, with the word "consequently" acting as a conjunction for the two independent clauses. Thus, the correct placement for the pause will be after "driver" and "consequently".