the mosquito who foiled the lion

once upon a time, a tiny mosquito started to buzz round a lion he met. "go away! " grumbled the sleepy lion, smacking his own cheek in an attempt to drive the insect away.
"why should i? " demanded the mosquito. "you're king of the jungle, not of the air! i'll fly wherever i want and land wherever i ." and so saying, he tickled the lion's ear. in the hope of crushing the insect, the lion boxed his own ears, but the mosquito slipped away from the now dazed lion.
i don't feel it any more. either it's squashed or it's gone away, the lion thought. but at that very moment, the irritating buzz began again, and the mosquito flew into the lion's nose. wild with rage, the lion leaped to his hind legs and started to rain punches on his own nose. but the insect, safe inside, refused to budge. with a swollen nose and watery eyes, the lion gave a terrific sneeze, blasting the mosquito out. angry at being dislodged so abruptly, the mosquito returned to the attack: buzz! buzz! it whizzed round the lion's head. large and tough as the lion was, he could not rid himself of his tiny tormentor. this made him angrier still, and he roared fiercely. at the sound of his terrible voice, all the forest creatures fled in fear, but paying no heed to the exhausted lion, the mosquito said triumphantly, "there you are, king of the jungle! foiled by a tiny mosquito like me! "
and highly delighted with his victory, off he buzzed. but he did not notice a spider's web hanging close by, and soon he was turning and twisting, trying to escape from the trap set by a large spider. "bah! " said the spider in disgust, as he ate it.
"another tiny mosquito. not much to get excited about, but better than nothing. i was hoping for something more substantial."
and that's what became of the mosquito that foiled the lion!
adapted from "the lion and the mosquito" by the grimm brothers

which of these best describes the story's theme?
a.
the mosquito is mightier than the lion but weaker than the spider.
b.
spiders are clever creatures because they catch and eat mosquitoes.
c.
gentleness is a far more effective weapon than harshness.
d.
be careful what you boast about; it may come back and bite you.