Concept:Identify the unique code for each word by comparing common words across the given sentences.
Explanation:From the three codes, the word 'progress' appears in all sentences and its code 'pqr' is also common. So progress = pqr.
'study' appears in sentence 1 and 2. Common code between them (besides pqr) is 'hgv'. So study = hgv.
Now in sentence 1, remaining words are 'hard' and 'learn' with codes 'jkl' and 'cdf'.
In sentence 3, 'hard' appears again with codes 'jkl', 'efg', 'wxy' (since progress is pqr). The common code with sentence 1 is 'jkl', so hard = jkl. Hence learn = cdf.
In sentence 2, after study and progress, remaining codes 'mnz' and 'tuv' are for 'test' and 'fast' (order unknown).
In sentence 3, after hard and progress, remaining codes 'efg' and 'wxy' are for 'work' and 'success' (order unknown).
The required words are 'learn' (cdf), 'hard' (jkl), 'test' (either mnz or tuv), and 'work' (either efg or wxy).
Only option D gives codes jkl, cdf, tuv, wxy – which matches hard, learn, test, work in that order.
Answer:Option D: jkl, cdf, tuv, wxy
