Answer:
a
Explanation:
the other two you dont know if everyone will see it
™
It is very rare for people to distinguish which is which, There is currently no way to distinguish, in the absence of independent evidence, whether a particular memory is true or false. Even memories which are detailed and vivid and held with 100 percent conviction can be completely false. *I got this info from a website*
How this can be prevented/can vaccines help?
What age group is at risk?
Could it be lethal?
Why does this virus happen?
Carbon dioxide gas and oxygen gas