Which of the following choices for staying safe is the best to attempt first when trying out a new activity?
a. follow the same routine that the experts use, and don’t stop just because of a little pain
b. learn the rules and proper technique from an expert, and use the necessary gear
c. work as hard as you can, and do not take any breaks until you’ve learned the skills
d. try the skills on your own without pads or a helmet to see if you like playing.

Aresearcher lyses a cell that contains nucleic acid molecules and capsomeres of tobacco mosaic virus (tmv). the cell contents are left in a covered test tube overnight. the next day this mixture is sprayed on tobacco plants. we expect that the plants would ) develop some but not all of the symptoms of the tmv infectionb) develop the typical symptoms of tmv infectionc) not show any disease symptomsd) become infected, but the sap from these plants would be unable to infect other plants