Question

how does the picture help the reader better understand the octopus?
(a) it shows why the octopuss arm is so long.
(b) it shows how an octopus uses suction cups to taste.
(c) it shows how an octopus uses its arm to capture prey.
(d) it shows where the suction cups are located on the octopuss arm.

Explanation:

To determine the correct answer, we analyze each option:

• Option a: A picture of an octopus's arm is unlikely to show "why" the arm is long (this would involve evolutionary or anatomical explanations, not just a visual).
• Option b: Tasting with suction cups is a functional detail that a typical picture of an octopus's arm might not illustrate (it would need to show the tasting process, which is not obvious from a static image of the arm).
• Option c: Capturing prey involves action (like the octopus moving its arm to catch something), and a static picture of the arm alone wouldn't show this dynamic process.
• Option d: A picture of an octopus's arm can clearly show the location of suction cups on it, as this is a physical feature visible in a visual representation.

Answer:

d. It shows where the suction cups are located on the octopus's arm.