[viky79]

The reaction in below hyperlink
hxxp://imgur.com/ooKI6

I and II represent

(1) Substitution, elimination
(2) Elimination, substitution
(3) Substitution, addition
(4) Addition, elimination

{MOD Edit} Break link, attach umage

[Schrödinger]

The images are actually pretty confusing, and probably wrong too... There are a couple of arrows (in both the pictures) that shouldn't be there.

[discodermolide]

I agree with Schrödinger, there is something not quite with the images.

[viky79]

Can you answer with suggested corrections in the images

[discodermolide]

Can you answer with suggested corrections in the images

Yes, probably, but what is your opinion of the answer?

[fledarmus]

Try working the problem from the back end forward. If you were told to draw a substitution reaction for ethoxide and isopropyl bromide, what would it look like? How about an elimination reaction? An addition reaction?

Once you answer that, you should be able to pick out the extraneous arrows. As drawn, the reactions are meaningless, but the question can still be read for meaning.