In act 2 of hamlet what does the queen believe caused hamlet to go insane? a. the death of his father b. the attack by fortinbras c. ophelia’s suicide d. the accidental murder of polonius

The awnser is b here

  i think you forgot to put the options but if your reffering to this question then your answer will be "b"  a. add "to" to the base form to create an adjective.b. when the subject of a sentence is singular, add "–s" to the base form.c. add "–ed" to irregular base forms to form the past participle.d. do not use a base form with plural subjects