Accommodation for near vision requires:
1. flattening of the lens.
2. contraction of the ciliary muscles.
3. activation of the sympathetic nervous system.
4. increased rounding of the cornea.
5. dilation of the pupil.

Option 2.

Accommodation of near vision requires the contraction of ciliary muscles.

Explanation:

Accommodation is the ability of the eye to adjust it optics thereby focus clear image of the objects on retina at various distance. Accommodation of near vision requires contraction of ciliary muscles. The lens is responsible for accommodation. The lens focuses light rays on retina. The ciliary muscle contract and make the lens to change shape, there by causing objects to appear real or cause accommodation of near vision.

the "power" of a lens is its resolution power, or its ability to distinguish between to closely located points. with the low power lens, it is likely you will see the rough form of the hay and maybe some movement of dots around the hay. however, when observed with the high power lens, the detailed features of the hay become visible and the microbes being grown are more clearly visible.

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the potatoes have high sugar concentrations and although these potatoes were different we could seethe effects that their sugar concentrations had in different environments. for example, the potatoes in sample a, were placed in pure water. this created a hypertonic environment and caused the potatoes to draw in water from its surroundings. we saw the opposite happen with the potatoes in sample b when placed in the sodium chloride solution. the potatoes in this case were in a hypotonic solution and therefore lost water to their surroundings.