Concept:The idiom “to chew the cud” means to think deeply or ponder over something, similar to how a cow patiently chews its food again and again.
Explanation:The phrase originates from the way a cow re‑chews its food after swallowing. By analogy, it describes a person who is lost in deep thought or meditation.
This idiom has been used in English since the 14th century to mean “to meditate” or “to reflect quietly”.
For example: “Farmers meet to chew the cud over their lunch.”
The other options—contriving, dying on duty, or inculcating virtues—do not match this meaning.
Answer:The correct answer is option C: to meditate.