Answer:
White blood cells are an important part of the immune system. HIV infects and destroys certain white blood cells called CD4+ cells. If too many CD4+ cells are destroyed, the body can no longer defend itself against infection. The last stage of HIV infection is AIDS (acquired immunodeficiency syndrome).
Explanation:
The answer is b i just took the test
Answer: hopefully im not too late answer below :)
Explanation: Core muscles ensure the spine and keeps it balanced out. Likewise they can help control developments, for example, strolling and standing. The center helps move vitality and assist us with moving in various ways.