Solution:This question matches types of Randomized Controlled Trials (RCTs) with their processes.
A. Randomization → IV. Individual gets equal chance of being allocated into either group: Randomization ensures each subject has equal probability of being assigned to any group.
B. Single-blinded trial → III. Participants not aware about selection in either group: In a single-blind trial, only participants are unaware of their group allocation.
C. Double-blinded trial → II. Investigator & participants not aware about group allocation: In a double-blind trial, both investigator and participants are unaware of assignments.
D. Triple-blinded trial → I. Investigator, data analyst and participants not aware about allocation: In a triple-blind trial, investigator, participants, and analyst are all blinded.
Correct Match: A-IV, B-III, C-II, D-I.