Answer:
A and E for sure,
C and D, depends on the language and on what you learned, because question isn't clear.
Explanation:
Variables are a central part of any programming, because that allows your program to have memory of data/events.
a.Variables can be local or global. TRUE
Yes, depending on the programming language, there might be distinction between the local variable (within a function) and global variables.
b. Variables cannot be changed. FALSE
Of course variables can be changed, that's why they are named that way.
c. Variables have keys and values within brackets [ ]. FALSE/TRUE
That's a tricky question to answer. Because SOME variables can have keys and values, they are a special kind of variables called arrays. But not ALL variables are arrays, at least in most computer languages, most of the variable hold only one value.
d.Variables have connected sets of characters. FALSE/TRUE
Again that's a tricky question, because a variable can contain characters, but can also contain numbers, objects, arrays, functions even.
e.Variables have names, extents, and scopes. TRUE
All variables have a name (even if it's a default global system name) and extent and scope.
