What are the basic points to remember on how to use a microscope?​

Always start with the low power objective lens. Center the specimen on the stage until it is directly under the low power objective lens. Keep the specimen in place with the stage clips. As you look through the lenses at the specimen, center the specimen within the 'field of vision' (the circular area of what you see).

Explanation:

i am positive it is c. condensing but i may be wrong

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.