Correct option is D
The one-word substitute for "to powder by crushing the spices" is "grind."
· Meanings of the given words:
· Grind: To reduce something to small particles or powder by crushing it.
· Meanings of other given words:
· Gain: To obtain or secure something desired.
· Greet: To give a polite word or sign of welcome.
· Guess: To estimate or suppose something without sufficient information.