Difficulty: Easy
Correct Answer: over
Explanation:
Given data
Concept/Approach
Triumph over is the standard collocation meaning to succeed despite difficulties.
Option analysis
over — correct and idiomatic: “triumph over the odds.”on/upon/about — do not collocate with “triumph” in this sense.
Common pitfalls
Choosing “upon” by analogy with other phrases; with “triumph,” the fixed preposition is “over.”
Final Answer
over
Discussion & Comments