The topic of these two questions would appear to be, "How to convert repeating decimals to fractions and fractions to repeating decimals".
My guess is that the "0.2" in the first question should really have appeared with a horizontal bar above the "2", indicating that the decimal number consists of an infinitely repeating sequence of that particular digit.
Similarly, I would guess that answer "b" to the second question should appear as a "0.83" with a horizontal bar above the "3", indicating that the digit "3" repeats infinitely.
The addition of two bars would make the questions meaningful and the answers correct.
Typography aside, they go out of their way to introduce unnecessary complexity to an already challenging subject. There are more straightforward paths to guide students through the arithmetic-algebra-analytic geometry-trigonometry-calculus sequence if that's what they're trying to accomplish.
Who knows; perhaps frustrating kids is an end in itself.