Broad differentiation strategies generally work best in market circumstances where: a. buyer needs and uses of a product are diverse and not fully satisfied by a standardized product. b. most buyers have similar needs and use the product in the same ways. c. the products of rivals are weakly differentiated and most competitors are resorting to clever advertising to try to set their product offerings apart. d. buyers are price sensitive and product switching costs are quite low. e. market competition revolves around slowly evolving product features.