Answer:
B
Explanation:
knees are bent and the upper body is brought forward and down, sometimes to avoid detection or to defend oneself.
As long as you clearly state the sources and resources of information it should be fine.
Milk is a nutrient-rich liquid food produced by the mammary glands of mammals. It is the primary source of nutrition for young mammals, including breastfed human infants before they are able to digest solid food.
I'm not sure what the lesson is, but the answer that makes sense the most is number. Number because most lessons in subject-verb agreement concerns the singularity and plurality of the subject at hand