A. Integers. Integers have to do with positive or negative whole numbers without decimals, so like with apples in a basket you would have 5 apples, not 5.67 apples. Whereas floating numbers has to do with decimals where it is basically saying the decimal can float. Strings are quite confusing but basically this is a string 1.5.1, and you would not have 1.5.1 of an apple. A Boolean is have to do with the truth values true and false and is normally denoted 1 and 0. Hope this helps!
