Final answer:
The term that describes someone who is excessively greedy and grasping is 'rapacious.' It is the best match for the definition provided, fitting the context of voracious and plundering behavior.
Step-by-step explanation:
The term you're looking for to describe someone who is excessively greedy and grasping; voracious, plundering is 'rapacious'. Option D fits this description. The word 'rapacious' comes from the Latin word 'rapere' which means to seize or grab. It is often used to characterize an insatiable greed for money, resources, or power, somewhat akin to the animals described in the verses, such as the wolf, snake, and hog, all of which can symbolize greed and excessive desire.
The other options you provided do not align with the meaning of greed and plundering: 'rambunctious' suggests a wild or unruly behavior, 'raspy' refers to a harsh or grating sound, and 'rampant' means spreading uncontrollably, often used in the context of something negative such as a disease or crime.