"Where will you stay?" I asked her: c) where she would stay.
'Have you eaten ALL the cake? She asked me: c) if I'd eaten all the cake.
'How often do you use public transport?" She wanted to know: a) how often I used public transport.
Did you see the parade?' She asked us: B) whether we'd seen the parade.
"When had you last spoken?" I asked her: b) when they had last spoken.
'Can she walk yet?" I wondered: c) if she could walk yet.
"What about having the party outside?" She suggested: b) having the party outside.
"Where will you stay?" I asked her: c) where she would stay.
In reported speech, when the reporting verb is in the past tense (like "asked"), the modal verbs shift back one step in time. "Will" becomes "would."
'Have you eaten ALL the cake? She asked me: c) if I'd eaten all the cake.
The correct structure for reported speech in this case is to use "if" or "whether," and "have" becomes "had" in the past tense.