Step 1: Understanding the Question:
We must pair each type of pill or device in List I with the effect in List II it is best known for, then match that pattern to one of the four coded options. List II has one extra item (item 2) that is not used in the correct pairing, added only as a distractor.
Step 2: Key Formula or Approach:
Recall the one standout pharmacological fact linked with each method: triphasic pills and their lipid profile, DMPA and its bleeding pattern, combined pills and cancer protection, and progestin-only IUDs and ectopic risk.
Step 3: Detailed Explanation:
Triphasic pills vary the estrogen-progestin dose across the cycle, giving a lower total hormone load and a more favourable lipid profile, so they carry a beneficial effect on high density lipoproteins (item 4). This matches A-4.
DMPA (depot medroxyprogesterone acetate) is well known for causing irregular bleeding early on and amenorrhoea with continued use, so amenorrhoea is common (item 3) fits DMPA. This matches B-3.
Combined pills, including the biphasic type, lower the risk of both ovarian and endometrial cancer with long-term use, so prevention of ovarian tumours (item 1) fits the biphasic pill. This matches C-1.
A progestin-containing IUD (such as Progestasert) works locally in the uterus, so if the device fails and pregnancy occurs, it carries a higher relative chance of that pregnancy being ectopic (item 5). This matches D-5.
Item 2 (good for women with hypomenorrhoea) is left over and does not fit any of the four pairs in the correct combination.
Putting these together gives A-4, B-3, C-1, D-5, which is code (a).
Step 4: Final Answer:
The correct match is A-4, B-3, C-1, D-5, option (A).