Your answers would be A,B, and C but if it’s only 1 I’d go with A
The 650 skeletal muscles in the human body contract when they receive signals from motor neurons, which are triggered from a part of the cell called the sarcoplasmic reticulum. Motor neurons tell your muscles to contract and the better you become at having those signals tell your muscles to contract, the stronger you can get.
The DAP has three core components: knowledge about development and learning; knowledge about individual children; and, knowledge about the social and cultural contexts where children grow and learn.
The correct answer is: AORTA