Which of the following statements is a mad goal?

i am going to take one minute off of my 5k time in the next month.
i am going to break the county record for the 100-meter freestyle.
i am going to score five goals in the next soccer game.
i am going to do well in my next three gymnastics meets.

Which statement best illustrates that problem solving can create new medical devices? robert hooke was in charge of verifying the information that was sent to the royal academy. william harvey did experiments with apes to learn about the circulatory system. the stethoscope was invented because the physician did not want to put his head on women's chests to listen to their heart and lungs. anton van leeuwenhoek was a very curious man and looked at just about everything under this microscope.