which of the following statements about secondhand smoke is not true?\na. the particles found in secondhand…

which of the following statements about secondhand smoke is not true?\na. the particles found in secondhand smoke are smaller than the particles found in firsthand smoke.\nb. secondhand smoke can have higher concentration of dangerous chemicals than firsthand smoke.\nc. secondhand smoke is inhaled less deeply than firsthand smoke.\nd. breathing secondhand smoke is at least as dangerous as breathing firsthand smoke.\n\nplease select the best answer from the choices provided.\n\n○ a\n○ b\n○ c\n○ d

which of the following statements about secondhand smoke is not true?\na. the particles found in secondhand smoke are smaller than the particles found in firsthand smoke.\nb. secondhand smoke can have higher concentration of dangerous chemicals than firsthand smoke.\nc. secondhand smoke is inhaled less deeply than firsthand smoke.\nd. breathing secondhand smoke is at least as dangerous as breathing firsthand smoke.\n\nplease select the best answer from the choices provided.\n\n○ a\n○ b\n○ c\n○ d

Answer

Brief Explanations:

To determine the false statement about secondhand smoke:

  • Option A: Secondhand smoke particles can be smaller (e.g., fine particles from exhaled or ambient smoke), so this can be true.
  • Option B: Secondhand smoke can have higher concentrations of some dangerous chemicals (e.g., due to combustion byproducts in ambient smoke), so this can be true.
  • Option C: Secondhand smoke is inhaled as deeply as firsthand smoke (or more, due to smaller particles reaching deeper lung tissue). The claim that it is "inhaled less deeply" is false.
  • Option D: Secondhand smoke is at least as dangerous (due to chemical exposure and particle depth), so this can be true.

Answer:

C. Secondhand smoke is inhaled less deeply than firsthand smoke.