To achieve the highest *net profit* from increased sales after 2 months, while simultaneously ensuring the *lowest marketing expenditure*, which combination of pricing strategy and marketing channel should the business choose?

The correct answer to the question "To achieve the highest *net profit* from increased sales after 2 months, while simultaneously ensuring the *lowest marketing expenditure*, which combination of pricing strategy and marketing channel should the business choose?" is Option D: Pricing P2 and Marketing M2.

The other options — A) Pricing P1 and Marketing M1, B) Pricing P1 and Marketing M2, C) Pricing P2 and Marketing M1 — are incorrect for this GMAT Exam Prep question. As explained above: This question requires calculating outcomes for each of the four combinations. P2 (decrease price 5%, 15% sales increase M1, 10% M2) generates higher sales volume. M2 (Email Marketing, $500 cost, 3% …