Answer:
B.
During inhalation, the external intercostals contract.
HIV or Human Immunodeficiency Virus is a viral infection, which directly attacks Leukocytes (white blood cells). Leukocytes are the cells responsible for fighting infections that break past the skin. If the infection is not controlled it can cause a range of disorder's which form a syndrome called AIDS or Acquired Immunodeficiency Disorder Syndrome. When this happen common infection for such thing as a common cold can turn lethal as the body is unable to fight pathogen's effectively.
In front of windows or even outside try staying away from open doors as well
Hope this helps, good luck ;)
If you intake to much sugar, you are one the road to possible death.
Damages self esteem, increases risk of anxiety, and increases likelihood of risky behaviours.