It is giving them "incentive". Which basically means giving them something (in this case, tax credits) in order to motivate them to do something (in this case, to use public transportation on a regular basis).
I do not know what a minim is but based on its root it has to be very SMALL.
Answer: We regret your claim that the gym bag you purchased was faulty, but we want you to know we're sorry if you suffered an inconvenience as a consequence, this is the best passage to pacify customers.
Explanation: It is the best passage to pacify customers because it appeals to the good nature of the customer and also how to show a well meaning apology.