- AMumble : Speak
- BTrickle : Flood
- CSprint : Walk
- DSob : Cry
Step-by-Step Solution
A whisper and a shout are the same act of using the voice at its faintest and at its loudest, so the pair runs from weak to strong. A trickle and a flood are the same act of water moving, at its faintest and at its greatest. 'Sprint : Walk' has the strength but runs from strong to weak, the wrong way. 'Mumble : Speak' sets a manner against the plain act rather than a weak degree against a strong one, and a sob is one kind of crying at the same level, not a fainter version of it.
Answer: B) Trickle : Flood