marcel and charles are neighbors. marcel owns a boat but never uses it. charles owns a car that he no longer needs since his son left for college in another state. marcel needs a car. marcel and charles make an agreement to trade the boat for car. what is the economic term given to this kind of exchange?

Which of the following is an example of how the principle of beneficence can be applied to a study employing human subjects? providing detailed information about the study and obtaining the subject's consent to participate. ensuring that the selection of subjects includes people from all segments of the population. ensuring that persons with diminished autonomy are protected. determining that the study has a maximization of benefits and a minimization of risks.