You pick up a transparent ruler and slowly crept up behind the mosquito while he was busy polishing his left wing. Using your whole strength, you slammed the ruler down on the mosquito as hard as you could. You hope that the mosquito's squashed corpse would stick to the ruler when you lift it, but unfortunately, not even a filmsy leg of his was broken.

Suprised at your own weakness, you aimed for the mosquito and slammed the ruler down 5 times within 2 seconds. Still, the mosquito did not seem injured at all and looked up at you with sparkling eyes. The with a glow of flash, he became 70 times bigger than his normal size! He turned his head around and you could see that his whole body is made of dark black steel. You slowly took a step closer and examined his texture cautiously.

Suddenly, a thought struck you and you ran to the kitchen searching madly for a lighter and a match. When you fianlly found one, you raced back to your room and found the mosquito sitting patiently on your desk without budging. You took the match and nervously, tried to light it without success. (You can't blame yourself since it's your first attempt trying to light a match in your enitre life.)

When you were about to strike the match a second time, the mosquito lifted his hind leg and kicked you flying back to the shelf. In this urgent situation...

you:

a) decided to kill it by spraying it with bug-spray

b) use a trap