Final answer:
One person may abet another in the context of committing a crime, such as driving the get-away car in a robbery. Morally speaking, diverting a trolley to save five lives at the cost of one, or saving a drowning child, present permissible or obligatory actions, whereas taking organs without consent is forbidden.
Step-by-step explanation:
To examine instances where one person might abet another, we need to understand the term ‘abet.’ Abet means to assist or encourage someone in the commission of a crime. Given the context of abetting, the correct answer to the question ‘In which of the following instances might one person abet another?’ would be: 4) Driving the get-away car in a robbery. When one drives the get-away car in a robbery, they are providing assistance to the commission of a crime, making it a clear example of abetting. Abetting involves actively participating in a criminal act, such as providing transportation or other assistance to someone involved in the commission of a crime.