<u>Answer:</u>
(C) BRIGHTNESS would be a good replacement for the bold word LIGHT to match the tone of the given sentence "Our eyes were seared by the sudden LIGHT when the fire reached the stash of gunpowder".
<u>Explanation:</u>
The sentence means that the person’s eyes suddenly started burning because of the light that was caused because of the fire in the gunpowder. So, the most apt option as replacement for “LIGHT” is “Brightness”. This is because the sentence refers to the radiating light which had caused the attention of person’s eye.
Option A, explosion, is incorrect because explosion refers more to sound and not the light. Option B, spark means small glow of light. Option D, Flame means the visible part of fire. So, options B and D are also incorrect as per the meaning of the sentence.
