Question

question 1/5
passage 3: the dumbo octopus
photo credit: svetlana ryazanova, https://www.zhushental.com/dumbo-octopus/credit/26197/2
1 when you imagine the ocean floor, perhaps your mind swims with huge, mysterious creatures full of sharp teeth and scaly skin. exotic animals like the giant spider crab, fangtooth fish, and giant tube worm make their homes at the bottom of
which statement best analyzes the purpose of the footnote in passage 3, paragraph 3?
the author included the footnote to explain why sunlight does not reach the depths where the dumbo octopus is found.
the author included the footnote to highlight the rarity of scientists visiting these depths by emphasizing the vast distance.
the author included the footnote to describe the cold and dark atmosphere of the dumbo octopus’s habitat.
the author included the footnote to help readers understand the extreme depths at which the dumbo octopus lives with a familiar unit of measurement.

Explanation:

To determine the purpose of the footnote, we analyze each option:

• Option 1: The footnote (photo credit) doesn't explain why sunlight doesn't reach the octopus's depth. Eliminate.
• Option 2: The footnote isn't about highlighting scientist rarity or distance. Eliminate.
• Option 3: The footnote is a photo credit, not about describing the octopus's habitat atmosphere. Eliminate.
• Option 4: The footnote (photo credit) doesn't relate to measurement units. Wait, re - evaluating: Wait, maybe a mis - read. Wait, the correct reasoning: Wait, no, perhaps the original passage's footnote (maybe a depth unit? If the footnote has a unit like meters or feet to help readers understand the depth (a familiar unit), then Option 4 makes sense. Assuming the footnote provides a depth in a familiar unit to help readers grasp the extreme depth the octopus lives at, this option fits.

Answer:

The option "The author included the footnote to help readers understand the extreme depths at which the Dumbo octopus lives with a familiar unit of measurement." (the fourth option in the list of choices)