If you had studied harder, you — in the admission test. / If I had studied harder, you — for admission.
ক.qualified
খ.would have qualified✔
গ.would qualify
ঘ.will qualify
ব্যাখ্যা: If Clause---এ Past Perfect Tense (had studied) থাকায় Third Conditional---এর নিয়ম অনুযায়ী Main Clause---এ 'would have + V3' (would have qualified) বসবে।