Dynamic multiple choice options based on value from another field

You can search for help on conditional drop downs, but this can be done easily if you use relationships instead of multiple choices.

Table of  Program Types.

Table of Scopes.

Then relate the and load up your data  

then relationship where one Project Type has many Projects.

then relationship where one Scope has many Projects, and then set the field property for related Scope to be conditional in the selection of related project type