What body systems recieves information from inside and outside of the body

Which of the following is not a common cause for exercise related injury? a. overeating b. being dehydrated c. being active in an unsafe enviroment d. not wearing the proper clothes or protective gear

What are your thoughts on nonhuman trials? do you feel that testing should be done on animals? what are the advantages and disadvantages with nonhuman trails?

*edit* i took the test and i picked a and it was incorrect for its c! rank the following suggestions for preventing std, in order of increasing effectiveness. 1) using latex condoms properly 2) using spermicidal foam or jelly with a monogamous partner 3) abstaining from sexual intercourse and genital contact a. 1, 2, 3c. 2, 1, 3