The word "poignant" refers to something that evokes a strong sense of sadness or emotion. Therefore, among the given options, "sad" best expresses the meaning of "poignant."

"Mimic" means to imitate or copy the actions, speech, or mannerisms of someone or something. Choosing "Copy" as the synonym for "Mimic" is appropriate because copying involves reproducing something in a way that resembles the original, which aligns with the concept of mimicry.

"Canny" refers to being clever, astute, or showing good judgment, especially in practical matters. Someone described as "canny" is often skilled in making decisions that are sensible and advantageous. In this context, "clever" is an appropriate synonym because it captures the idea of being intelligent and resourceful.

The antonym (opposite) of the word "SCARCE" is:

(A) plentiful

"Scarce" means in short supply or insufficient, while "plentiful" means abundant or ample, making it the opposite in meaning.

The synonym for the word "COERCE" is:

(B) pressurize

"Coerce" means to persuade someone to do something by using force or threats, and "pressurize" shares a similar meaning in the context of applying pressure or influence to achieve a particular result.