Need quick bitter flavors alert us to foods that a) not taste good b) lack nutritional value c) be poisonous d) be spoiled

I would say C. Be poisonous.  Although yes bitter flavors can not taste good that's not it's main reason to alert. Bitterness is to alarm us when our food is potential danger to our health.

be confident on yourself. ignore such fools and move on ; )

the ecg findings of an acute anterior myocardial infarction wall include: st segment elevation in the anterior leads (v3 and v4) at the j point and sometimes in the septal or lateral leads, depending on the extent of the mi. this st segment elevation is concave downward and frequently overwhelms the t wave.

explanation: