Hi Diana
Case sensitive.... You define the answer as 'Snow' the user responds with 'snow'.
If you've said it's case sensitive then this answer is wrong the corerect response is Snow.

Draw and arrow on the page, an autoshape will do it or a graphic image.
The move is easy, select your trigger then you want. Pick a 'move start', select the arrow object and give the end position the arrow should move to.
The closest I have is a cloze activity sunstitute where text moves to defined positions, the principle is exactly the same though.
Nick