Many types of social behavior involve cooperative behavior. The major purpose of a pair bond is to ...

Many types of social behavior involve cooperative behavior. The major purpose of a pair bond is to
  form a stable relationship for the purpose of:
  a. securing food.
  b. defending territory.
  c. kin selection.
  d. mating and caring for young.
  e. selection of a mate.

Question 2

Sexual selection:a.
   is the basis for establishing elaborate societies.
  b. leads to a reproductive advantage for some individuals over others of the same sex and
  species.
  c. favors monogamous mating systems.
  d. leads to the investment of parental care of offspring.
  e. is not a type of natural selection.