According to Hyams, American children initially omit the subject ...

[ENagel]

According to Hyams, American children initially omit the subject in many of their early sentences because
 
  a. the subject is implied by the child
  b. children have difficulty using pronouns
  c. all children are born with the null-subject parameter set to on and must eventually learn switch it
  d. telegraphic speech generally includes objects but omits subjects because they are semantically more complex.

Question 2

Sentences like The window was broken
 
  a. are truncated passives
  b. are the rarest kind of passives used by children
  c. have animate subjects
  d. specify an inanimate agent

[iceage]

Answer to Question 1

c

Answer to Question 2

a

[ENagel]

Gracias!

[jomama]

Thanks for the timely response, appreciate it