What is the correct order of water flow for fish respiration?

What is the correct order of water flow for fish respiration?
 
  a. Water into the mouth - goes through the gill slits - water enters the pharynx.
 b. Water enters the pharynx - goes through the gill slits - water exits the mouth.
 c. Water enters the pharynx - goes through the gill slits - water exits the mouth.
 d. Water goes through the gill slits - water enters the pharynx - water exits the mouth.
 e. Water into the mouth - water enters the pharynx - goes through the gill slits.

Question 2

What percentage of the species that have ever lived have become extinct?
 
  a. 1 percent
  b. 9 percent
  c. 50 percent
  d. 75 percent
  e. 99 percent