I would look this one up on Google
Explanation: Newton's first law of motion states that a body at rest remains at rest, or, if in motion, remains in motion at a constant velocity unless acted on by a net external force. This is also known as the law of inertia. Inertia is the tendency of an object to remain at rest or remain in motion.
The answer is the last option.
300/8 = 37.5
37.5 x 12 = 450
New temp. = 450 K
Hope this helps!