A. Flexibility.
Flexing loves to move those muscles! :D
The correct answer should be B. begins having conflicts with authority
Niacin is a B-complex vitamin. It's found in food, but is also available at high doses by prescription. It lowers LDL cholesterol and raises HDL cholesterol. These drugs also lower elevated triglycerides.
He was known for being the founder of an unfinished theory of human cultural and bio-social development commonly referred to as cultural-historical psychology, the prominent advocate for the new theory of consciousness, the "psychology of superman", and leader of the Vygotsky Circle (also referred to as 'Vygotsky-Luria Circle').
She decides that her best course of action is to enjoy what she can without causing unnecessary pain. This is a smart choice since she has had arthroscopic surgery in the past and the age consideration. Also she is already acknowledging her knees are bothering her. Best to be safe than sorry.