Answer:
Option B
Explanation:
Magnification of Microscope is
Mo= Magnification of objective lens and
Me= magnification of the eyepiece.
Both magnifications( of objective and eyepiece) are inversely proportional to the focal length.
Magnification,

when the focal length is less magnification will be high and when the magnification is the low focal length of the microscope will be more.
Thus. Magnification will increase by decreasing the focal length.
The correct answer is Option B
Inertia I think because I've heard it around school and in science
No, they actually travel through the vacuum of outer space, but it also requires the absence of a material sedium.
A good follow-through maintains flow in the motion. It is to hit 'smooth', rather than to hit 'hard'. It is to maintain a certain 'looseness' in the swing, rather than 'tension' or 'over-hitting' the ball with too much power.