-McDonald's is creating new menu items to appeal to new, health conscious customers. Is this an example of Market Penetration, Market Development, Product Development, or Diversification?

-A small winery (that just makes and sells wine in bulk to wholesalers) is considering opening up a small restaurant on their property. Is this an example of Market Penetration, Market Development, Product Development, or Diversification?

-Wal-mart stores are planning to use more frequent discounts to attract more new customers. Is this an example of Market Penetration, Market Development, Product Development, or Diversification?

-A local Chinese restaurant has expanded its menu to also include Vietnamese and Thai food because their customers were asking for it. Is this an example of Market Penetration, Market Development, Product Development, or Diversification?