Answer:
Oral poliovirus vaccine or Sabin vaccine, named for its inventor American physician and microbiologist Albert Sabin, was developed. OPV contains live attenuated (weakened) virus and is given orally.
B cause they all blend in with snow so they can survive
The answer to this question would be: the more force used, the less effective it is.
Sometimes, more force in counterinsurgency can cause a less effectivity. It was called paradox because with more force you should expect more results and more efficiency. But more force could mean higher possibility for collateral damage which can cause loss, not gain. An overwhelming force also might be pictured as brutality.
The answer is A. amino acids. Hope this helps!!!