Final answer:
Consumer behavior, supply and demand, and market competition can all be categorized as research on actions on the market.
Step-by-step explanation:
The question is asking which of the options can be categorized as research on actions on the market. Out of the given options, Consumer behavior, Supply and demand, and Market competition can be categorized as research on actions on the market.
Consumer behavior involves studying how consumers make decisions and behave in the market, which influences market actions. Supply and demand research analyzes the interaction between the amount of a product offered and the demand for it, which directly affects market actions. Market competition research examines the competitive environment and how it influences actions in the market.