Hi Niyaz,
Option B:This pair does not represent opposite actions. In the context of pawning, "hock" and "pawn" are related actions, not opposites.

Option C:This pair represents different degrees or styles of writing but not necessarily opposite actions. "Scribble" suggests a less organized or messy form of writing, while "write" can encompass more formal or structured writing.

Option D:This pair represents a cause-and-effect relationship rather than opposite actions. "Contaminate" implies the introduction of impurities or harmful substances, leading to the spread of contamination.

Hope this helps!