What are blue light glasses and why are they good for your eyes?

Blue light glasses provide relief from the uncomfortable side effects associated with staring at screens. The glasses have special lenses that block or at least filter out certain light waves from devices and are also said to protect the retina from damage

Explanation:

Blue light blocking glasses can help reduce eye strain. Blue light can make it difficult to focus on the screen, making your eyes strain to concentrate. Blue light glasses help increase contrast on your screen, making it easier to focus and subsequently reduce eye strain.

absolute strength refers to the maximum force exerted by a body irrespective of body size. relative strength on the other hand is the force exerted by a body in relation to muscle size or body weight.

so the answer is: c. absolute strength measures strength regardless of your body size, while relative strength measures strength adjusted for your weight.