Question

read the beginning of olivias report.
1
when people hear the words \sea cucumbers\ perhaps they picture some sort of aquatic vegetation, maybe a seaweed that has a long, oval shape and greenish markings. sea cucumbers do indeed look a bit like garden cucumbers, but they are not plants. they are invertebrate marine animals that are closely related to sea urchins and sea stars. they have no obvious head region, and their mouths are located on the underside of their bodies.
2
sea cucumbers do not move quickly nor do they have sharp teeth or claws to defend themselves. they do, however, have ways to protect themselves from predators. some species can expel a thread - like material that may entangle a predator. other species of sea cucumber can activate a system of fibers under the skin that links together and transforms the cucumbers body from soft to rigid, making it less likely that an enemy will be able to sink its teeth into the cucumber.
which two sentences should olivia add to help develop her second paragraph?
□ 1. sea cucumbers can keep themselves safe by squeezing their bodies into small crevices or holes.
□ 2. sea cucumbers do not have brains; they have nerves near their mouths that control their activities and behavior.
□ 3. sea cucumbers are not as familiar to most people as sea stars, which are able to move with great speed if danger is nearby.
□ 4. sea cucumbers are scavengers that play a key role in their environment by consuming dead and decaying matter on the ocean floor.
□ 5. sea cucumbers can eject some of their internal organs if they are disturbed; these organs are coated with a substance that is harmful to some animals.

Explanation:

The second paragraph is about how sea cucumbers protect themselves from predators. We need to find sentences that add more ways they defend themselves.

• Sentence 1: Describes a way (squeezing into crevices) to stay safe, relevant to defense.
• Sentence 5: Describes ejecting internal organs (a defense mechanism), relevant.
• Sentence 2: Is about their nervous system, not defense.
• Sentence 3: Compares familiarity with sea stars, not defense.
• Sentence 4: Is about their role as scavengers, not defense.

Answer:

1. Sea cucumbers can keep themselves safe by squeezing their bodies into small crevices or holes.
2. Sea cucumbers can eject some of their internal organs if they are disturbed; these organs are coated with a substance that is harmful to some animals.