- Black ink in water causes animals to have difficulty seeing
- A predator is a kind of animal
- So, black ink in water causes predators to have difficulty seeing

- Black ink in water causes predators to have difficulty seeing
- Octopuses release black ink into water
- Therefore, octopuses releasing ink into the water causes predators to have difficulty seeing the octopus

- Octopuses releasing ink into the water causes predators to have difficulty seeing the octopus
- Hiding means ability to be seen decreases for camouflage
- Therefore, ink is used for hiding from predators by octopuses

So, ink is used for hiding from predators by octopuses
Question
When an octopus feels threatened, it can release black ink into the water. The ink MOST likely helps the octopus

Context
- Octopuses release black ink into water 
- Black ink in water causes animals to have difficulty seeing 
- A predator is a kind of animal 
- Hiding means ability to be seen decreases for camouflage