Answer:
3.5 percent
Explanation:
Pretend that 100 researchers worked on this project in total. We choose 100 to make the problem easier.
Then, 75 researchers worked in the lab, and 25 worked at the pond.
Of the researchers that worked at the pond, 14 percent collected bugs.
Therefore a researcher has a 25x0.14 percent chance of collecting bugs and working at the pond which is 3.5 percent.
Hope this helps!