When someone implies that not following a trend will leave a person isolated, which appeal are they using?

The appeal being used when someone implies that not following a trend will leave a person isolated is based on the "Join the Bandwagon Appeal." This technique plays on the social pressure to conform to popular opinions or behaviors. By suggesting that straying from the trend could result in isolation, the argument attempts to persuade individuals to join the majority or popular viewpoint in order to avoid social exclusion. This can create a sense of urgency and encourages conformity as individuals may feel compelled to participate in the trend simply to belong or fit in with others.

The other techniques mentioned, such as ridicule or ambiguous reasoning, do not directly address the concept of social isolation due to non-conformity and instead focus on different tactics that do not center around the pressure to align with the majority.