Despite plenty of opportunities to observe falling object, people continue to believe that heavy ...

Despite plenty of opportunities to observe falling object, people continue to believe that heavy objects fall faster than lighter ones. This is explained by which of the following?
 
  a) Flawed mental model
 b) Bias in judgment
 c) Lack of an algorithm
 d) Impetus theory

Question 2

I remember the words to my high school fight song, even though I haven't sung it in many years. Which of the following reflects the significance of this phenomenon?
 
  a) It is evidence against decay theory
 b) It is evidence that rehearsal is not necessary for learning.
 c) It is evidence that implicit learning has taken place.
 d) It is evidence against the distributed practice effect.