Final answer:
Candy bars and chewing gum often use intensive distribution to reach broad markets and selective distribution for specialized selling environments.
Step-by-step explanation:
Candy bars and chewing gum are most likely to be distributed through intensive distribution and selective distribution. Intensive distribution means these products are sold in as many outlets as possible to maximize customer convenience and sales frequency. This includes supermarkets, convenience stores, vending machines, and gas stations. Selective distribution involves choosing specific outlets to distribute a product - a method that can be used for specialty or higher-priced items, where more control over the display and sales environment is desired.