As trained teachers, Joke teaches … better than Jumoke.

Analyze the question: We need a word that fits before the comparative "better" in the sentence: "Joke teaches ___ better than Jumoke."

Concept: "Better" is a comparative form (of "well"). To intensify a comparative, English uses specific modifiers:

• far / much / a lot / way are used to strengthen comparatives (e.g., far better, much taller).
• very cannot modify a comparative directly. We say "very good", but not "very better" (we'd say "very much better").
• too means "excessively" and doesn't work with a comparative like this (too better is wrong).
• more is used to form comparatives of long adjectives, but "more better" is a double comparative, which is incorrect.

Step-by-step check:

• A. "Joke teaches far better than Jumoke." ✔ Correct and natural.
• B. "Joke teaches too better than Jumoke." ✘ Wrong usage.
• C. "Joke teaches very better than Jumoke." ✘ "Very" can't modify a comparative.
• D. "Joke teaches more better than Jumoke." ✘ Double comparative.

Answer: A. far

Exam tip: Remember the comparative intensifiers: much, far, a lot, even, still. "Very" goes with plain adjectives (very good), while far/much go with comparatives (far better). If you see "more" before words like better, worse, or taller, it is a double comparative, so eliminate it.