Which Molecule is Least Likely to Be Able to Pass

Question

Which molecule is least likely to be able to pass through a cell membrane without help?
A)H2O
B)CH4
C)C6H12O6
D)C7H16

Accepted Answer

C) represents a molecule with a large size and complex structure, likely making it more difficult to pass through a cell membrane without assistance, compared to the smaller and simpler molecules represented by the other options.