B. preserve the fingertip in ice for reattachment if possible
I would have to say that a set of generally valid ideas about behavior are not principles of psychology.
Consuming inadequate calories or having a deficiency in certain vitamins or minerals is known as undernutrition. It is also known by the term malnutrition. The correct option among all the options that are given in the question is the second option or option "b". Many children of the third world countries suffer from this disease.