What sort of question were they asking here?
Why did neither the people nor the Spies say anything derogative about the land itself?
Ramban: Because they knew that Moshe, who knew all that there was to know about Eretz Yisrael, 1 would immediately challenge any negative statement that they would make about it. Consequently, even the Spies conceded that the land was good, 2 attributing their fears to the strength of its inhabitants.
Why were the people guilty? Why should they have listened to Yehoshua and Calev and not to their ten colleauges?
Ramban: Seeing as all the Spies agreed that the land was good, 1 and the entire debate concerned the strength of the Cana'anim - whether it was possible to overcome them, they should have had faith in Hashem, "The Man of war" (Shemos 15:3), 2 and believed Yehoshua and Calev that they would have no problem in defeating them.