Does the presence of the double bond in the hydrocarbon tail of oleic acid change the shape of the ...

Does the presence of the double bond in the hydrocarbon tail of oleic acid change the shape of the molecule?
 
  a. No, because the double bond strengthens the existing shape.
  b. No, because there is no double bond in oleic acid.
  c. Yes, because the double bond results in a bend in the molecule, forming a rightangle.
 d. Yes, because the double bond results in a circular structure to the molecule.

Question 2

In an atom, the electrons are
 
  a. housed within the nucleus.
  b. moving through the nucleus.
  c. present in various energy shells.
  d. usually at rest, but occasionally move.
  e. positively charged.