A ________ is undertaken first to find unforeseen obstacles to data gathering during participation in a research study.
A) null hypothesis
B) pilot trial
C) principal investigation
D) data analysis
Question 2
For which of the following patients would you be most concerned about exposure to cyanide?
A) Auto mechanic working near exhaust fumes
B) Coal miner working long hours in a mine
C) Worker who paints cars in an auto body shop
D) Firefighter battling a smoky structure fire