When marketing in the service industry, "Keeping Promises" equates to External marketing Interactive marketing Internal marketing employees as customers Pretend Professor Miller has a company that sells amazing custom sneakers with his own unique style. His company tries to sell these sneakers to kids 3-6 years old (the only people on earth who share his sneaker taste). If Professor Miller decided to introduce a new product, such as tie-dyed socks, to the same market (3-6 year olds...which strategy from the strategic opportunity matrix would this be? market development market penetration diversification product development