Picking up nails with a magnet, taking them off, and repeating it ...

[Engineer]

Picking up nails with a magnet, taking them off, and repeating it
  were exhibiting:
 
  a) The meaning level of interaction
  b) The manipulation level of interaction
  c) The mastery level of interaction
  d) An interest in pounding nails

Question 2

Children who held a magnifying glass up to their eyes as spectacles
  were exhibiting:
 
  a) The meaning level of interaction
  b) The manipulation level of interaction
  c) The mastery level of interaction
  d) A new way to use it

[Sweetkitty24130]

Answer to Question 1

c

Answer to Question 2

b

[Engineer]

Wow, this really help

[covalentbond]

Gracias!