In Milgram's obedience experiments, "teachers" were LEAST likely to deliver the highest levels of shock when:.
a) the "learner" said he had a heart condition.
b) the "learner" was placed in a different room from the "teacher."
c) the experiment was conducted at a prestigious institution such as Yale University.
d) the experimenter became too pushy and told hesitant participants, "You have no choice, you must go on."
e) the "teachers" observed other participants refuse to obey the experimenter's orders.

Option e => the "teachers" observed other participants refuse to obey the experimenter's orders.

Explanation:

The Milgram's obedience experiments is one of the Important concept in Psychology and the experiment was proposed by a Psychologist known as Stanley Milgram.

The experiment that is the Milgram's obedience experiments was an experiment that was used to described things like the killing of slaves and Jews and other bad things that happened in Vietnam.

Although, many critics have said that the experiment was unethical because of the ways the experiment was done(that's through electric shock) and there were many case of participants being in distress.

The main concept of the experiment was to show that people tends to obey more when they are forced into doing something.

figure it out loser harabe