Magnification is the ratio of of an image a)enlargement b)reduction c)both a and b d)none of the above

Magnification is the ratio of enlargement and reduction of an image

Explanation:

Magnification is the way of enlarging the apparent size of an object. When the magnification of an object is less than 1 it shows reduction in size while when it is greater than 1, it shows enlargement in size. Mathematically, it is given by :

i.e.

Hence, the correct option is (c) " both a and b " i.e. " enlargement and reduction ".

more words for this could be abiotic and biotic

abiotic: living organisms within an ecosystem

biotic: non-living organisms within an ecosystem