3. Eating large quantities of red meat is unhealthy; in fact to be truly healthy, a vegetarian diet is preferable to one that includes meat. Unstated assumption: Explanation:

The unstated assumption in this argument is "don't eat meat" and if you do it "try to make it in small quantities".

Explanation: having a close look at the sentences, this is what is implicitly assumed-"eating large quantities of red meat is unhealthy" (do not consume meat, it can be harmfull for your health); in fact to be truly healthy, a vegetarian diet is preferable to one that includes meat. (if you really want to be healthy and follow a healthy diet, just concume veggies and get rid of meat).