Read the sentences from the article. 1. They have developed an easy-to-use eye dropper that could benefit older people with shaky hands and a
mouth guard that fits athletes who wear braces.
2. Finally, they developed a device that automatically keeps the bladder clear and free of blood clots
immediately after prostate or bladder surgery.
3. One team created a better way for medical professionals to practice inserting intravenous (IV) catheters.
4. Students work on 10 to 15 projects at the start of the course, then narrow that down to six or eight with
the greatest potential for solutions.
Which two sentences taken together provide the BEST evidence that students in the medical engineering
program have invented devices that can improve the way doctors do their jobs?
A. 1 and 3
B. 1 and 4
C. 2 and 3
D. 2 and 4