In what order does a molecule of oxygen move from the air into a person’s blood through these structures? $1$ bronchiole $2$ capillary $3$ alveolus wall $4$ larynx
- A$1 \rightarrow 4 \rightarrow 2 \rightarrow 3$
- B$3 \rightarrow 2 \rightarrow 1 \rightarrow 4$
- C$4 \rightarrow 1 \rightarrow 3 \rightarrow 2$
- D$4 \rightarrow 2 \rightarrow 1 \rightarrow 3$