The correct answer is option B “When I was younger I could remember anything, whether it happened or not.” (Twain). Correlative conjunctions are pairs such as either...or, neither...nor, whether...or (not only, but...also). In this example the phrase "I could remember anything, whether it happened or not" uses the correlative conjunction "whether". The other options have different sentence structures.
Examples are comma, colon, semi-colon, Dash, parentheses,
Being confident when I feel like I'm not working hard enough, and when I feel like obstacles are in my way.