They took 51 different flavored e-cigs and analyzed them. The author, Joseph Allen, along with his team, discovered that at least 1 of 3 top toxins were found in 47 of the e-cigs.
Question:What evidence is given for the primary claim? Select all that apply.
Answer:An experimental study was conducted (natural experiments OK)
Highlight:
They took 51 different flavored e-cigs and analyzed them. The author, Joseph Allen, along with his team, discovered that at least 1 of 3 top toxins were found in 47 of the e-cigs.