Question

rhetorical synthesis: medium
while researching a topic, a student has taken the following notes:
haidingers brush is an entoptic phenomenon, meaning a visual effect
that is produced by the human eye rather than originating from an
outside light source.
it appears as a very faint yellow and blue pattern when looking at a
blank white field or a clear blue sky.
this pattern is due to the interaction of linearly polarized light with the
human eyes cornea and lens.
it is named after austrian physicist wilhelm karl von haidinger, who
first described it in 1844.
seeing haidingers brush is an indication of good eye health, as certain
eye conditions like macular degeneration can prevent people from
perceiving it.
the student wants to explain how perceiving haidingers brush relates to
eye health. which choice most effectively uses relevant information from
the notes to accomplish this goal?
choose 1 answer:
haidingers brush, first described by austrian physicist
wilhelm karl von haidinger in 1844, appears to the eye
as a faint yellow and blue pattern when looking at a
blank white field or a clear blue sky.
the faint yellow and blue pattern known as haidingers
brush is an entoptic phenomenon caused by the
interaction of linearly polarized light with the cornea and
lens of the human eye.
seeing haidingers brush—an entoptic visual effect
produced by the interaction of linearly polarized light
with the cornea and lens of the human eye—indicates
good eye health, since conditions like macular
degeneration can prevent its perception.
named after wilhelm karl von haidinger, haidingers
brush is a faint pattern that can be seen when looking at
a clear sky, and it is an indication of good eye health.

Explanation:

The student's goal is to explain the relation between perceiving Haidinger's brush and eye health. Option C directly addresses this by stating that seeing Haidinger's brush (defining it as an entoptic visual effect from linearly - polarized light interaction with eye parts) indicates good eye health (mentions macular degeneration preventing its perception). Other options either focus more on description (A, B, D) without clearly establishing the health - perception link as comprehensively as C.

Answer:

C. Seeing Haidinger’s brush—an entoptic visual effect produced by the interaction of linearly polarized light with the cornea and lens of the human eye—indicates good eye health, since conditions like macular degeneration can prevent its perception.