List I gives teaching methods and List II indicates the factors helpful in rendering them effective. Match the two lists and choose the correct answer from the code given below:

The correct matching is i-d, ii-c, iii-b, iv-a, pairing each method with the factor that makes it effective.

The expository method (i) matches systematic, step-by-step presentation (d), its orderly delivery of ready-made content.

The discovery method (ii) matches learning by doing (c), since learners find principles through their own activity.

The discussion method (iii) matches open-ended and collaborative exchange of ideas (b), its dialogic core.

The personalised method (iv) matches promoting student autonomy and enhancing learning (a), as it tailors work to the individual.

The expository method is linked to Ausubel's reception learning, where meaningful content is presented in organised form.