Which of the options below represents two of the six factors which influence people's behavioral choices, according to the health belief model?
1) Perceived susceptibility to a risk, and perceived advantages of the recommended behavior
2) Severity of the risk, and number of people already acting on the recommended behavior
3) Perceived advantages of the recommended behavior, and number of communication channels recommending the behavior
4) Perceived obstacles to carrying out the recommended behavior, and amount of time elapsed since a similar risk was present in one's locality