What type of tissue, consisting of a single layer of flattened cells, is designed to allow the easy ...

What type of tissue, consisting of a single layer of flattened cells, is designed to allow the easy diffusion of oxygen
  from blood to tissue?
  a. simple connective
  b. simple squamous epithelium
  c. stratified columnar epithelium
  d. pseudostratified epithelium
  e. compound epithelium

Question 2

What type of tissue consisting of a single layer of cells containing cilia lines the throat and nasal passages?
  a. simple epithelium
  b. simple squamous epithelium
  c. stratified columnar epithelium
  d. pseudostratified epithelium
  e. compound epithelium