Which describes the role of the diaphragm during inhalation?

a the diaphragm flattens, making the chest cavity smaller, and air is sucked in.

b the diaphragm moves upward, making the chest cavity smaller, and air is pushed out.

c the diaphragm flattens, making the chest cavity larger, and air flows in.

d the diaphragm moves upward, making the chest cavity larger, and air flows in.

Need 5. reflection what factors did you use to determine the validity of your sources? (what was most important and guided your decision to determine validity? ) what factors did you use to determine the reliability of your sources? what was the most important and guided your decision to determine reliability? what form of media resources (internet, publications, music, advertisements, video, etc.) do you think were the most valid and reliable for your question? support your answer. what was your best source? support your answer.