Which sentences contain a restrictive or nonrestrictive relative clause?

In the section the deciding pitch what is the narrators point of view on how th pitcher feels about the upcoming event

Which sentence does not contain an intensive pronoun? a) i guess i will just take out the trash myself. b) while treating herself to lunch, angie ran into an old friend. c) tony himself made dinner last night even though he hates to cook. d) lisa wondered if she herself was the one who left the oven on all day.

Based on this excerpt the authors are mostly likely to attempt to answer which question?