vaccination has successfully eliminated __, making it unnecessary to keep on vaccinating against the disease.

B. communication skillscustomer care service specialists are very friendly and know just what to say to people.

Both sexes because it is always romantic

You did not show us the image of the burger, but i shall try to answer as best i can.  when purchasing food, always consider the ingredients as well as the person who prepared it. consider if they were hygienic people or not, in case the burger was infected with bacteria. no mortal should place an infected burger into their mouth.   

Ithink the answer is talking about their problems