It is possible to enable scrolling for long content in an Item. This is a great way to improve usability to your content, and allows the user to scroll through a passage of text while answering a question - as shown below.
Figure 1 - Scrollable Content
You can switch this option on in Layout options. The Layout Options are located above your Item, and can be added at any time while creating your content.
Once this button has been checked, content in the Item will be scrollable.
Figure 2 - Adding Scrollable Text