Final answer:
The phrase "prompt sb to do sth" means to encourage or induce someone to take a specific action, triggered by various factors such as information, circumstances, or situations.
Step-by-step explanation:
The phrase "prompt sb to do sth" means to encourage or induce someone to take a specific action. This could be due to a variety of factors, including a particular situation, a set of circumstances, or a piece of information that compels the person to act. The correct answer is option c) Encouraging or inducing someone to take a specific action.
For example, if a news report about plastic pollution in the oceans prompts an individual to start recycling, the report has successfully motivated that person to engage in environmentally friendly behavior. In this context, 'prompt' means to trigger or inspire the initiation of some kind of action.