Question is from "Intro to Android app development using App Inventor 2"

Create Parallel Lists Using App Inventor (visual or blocks Language) Website: http://appinventor mit.edu/explore/ Our contact list leaves a bit to be desired: phone numbers, for example. We could add the phone number in the same item as each name, but then we will not be able to treat it separately in order to make a phone call or other perform any other operation on it. Consider the concept of parallel lists. This means that item one in the first list relates to item one in the second list. Item two in list one relates to item two in list two, and so forth. If we have a list of names and each name has a corresponding phone number in the same position (index) but in a separate list, then we can consider the name and number lists parallel. Create Parallel Lists Using App Inventor (visual or blocks Language) Website: http://appinventor mit.edu/explore/ Our contact list leaves a bit to be desired: phone numbers, for example. We could add the phone number in the same item as each name, but then we will not be able to treat it separately in order to make a phone call or other perform any other operation on it. Consider the concept of parallel lists. This means that item one in the first list relates to item one in the second list. Item two in list one relates to item two in list two, and so forth. If we have a list of names and each name has a corresponding phone number in the same position (index) but in a separate list, then we can consider the name and number lists parallel