"krista is a softball catcher in texas. which of the following is not one of the key strategies krista would use to prevent excessive increases in body temperature and heat disorders? a. dressing in several thin layers of colthesb. drinking more waterc. playing lessd. none of these

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.   

Blood transfusions were rarely done and often fatal; they were outlawed until the nineteenth century.