Which of the following is the body’s first and most important line of defense against microorganisms? A. Antibodies
B. Skin
C. Humeral
D. White blood cells

d, i believe because of it's activity level

because health skills are tools and strategies and also practical skills are also something you need to learn (like tools and strategies) and put it in reality.

answer leukemia,lymphoma,aplastic anemia;

a warning may be from the male that she is with and if she is engaged then she should have a ring on her ring finger .

i hope this with your question