Answer:
D (Compassionate) Grapple and seize basically mean the same thing or their definitions are very similar at least so I'm guessing compassionate would be the answer since it goes with sympathetic.
Step-by-step explanation:
Austere means strict so that's not it, impeccable means perfect, or without fault so that's a no, and ascertain means to be certain or clarify something so using the process of elimination, D is the only answer choice that fits.