Which theory of water transport states that hydrogen bonding allows water molecules to maintain a ...

Which theory of water transport states that hydrogen bonding allows water molecules to maintain a continuous fluid
  column as water is pulled from roots to leaves?
  a. pressure flow
  b. evaporation-condensation
  c. cohesion-tension
  d. osmotic pressure
  e. bulk flow

Question 2

Water can diffuse directly across lipid bilayers, but ions cannot. What aids the ions in water in entering or exiting a
  cell?
  a. transport proteins in a cells cytoplasm
  b. transport proteins in a cells plasma membrane
  c. sugars produced in source regions
  d. organic compounds stored in plant tissues
  e. companion cells