You share a house with two other people. You are a concert pianist and often practice at home. One roommate enjoys listening to you practice, but the other does not. For the roommate who enjoys listening to you play, this is an example of ; for the other roommate, it is an example of .

Positive externality;

Negative externality.

Explanation:

Positive externality are positive reaction of one's activity on an unrelated third party while negative externality are negative consequences of one's activity on unrelated third party.

answer; i believe that the correct answer is ( troxel v. granville);

you probably know the answer. stop asking stupid questions and making me waste my time. j.k. ; )   b.t.w. what are three ratios equivalent to 5 : 11? thx