1)
Did they ask Yirmeyah whether or not to go to Egypt?
1.
Metzudas David: Yes. Should we go, or stay here?
2.
Malbim: No. They already resolved to do so (41:17)! Rather, they asked which route to take to Egypt.
2)
What is "v'Es ha'Davar Asher Na'aseh"?
1.
Malbim: After they come to Egypt, what should they do, and on the way, how to be saved from the sword of Melech Bavel.