Meaning: In this context, 'injured' refers to body parts that have been harmed or damaged.

Wrong options:

• matter: Matter is a noun that refers to physical substance, which does not fit as it does not describe a state of body parts.
• outside: Outside is an adverb or adjective that refers to the external part of something, which does not relate to the condition of body parts.
• sophisticated: Sophisticated is an adjective that describes complexity or refinement, which does not fit as it does not describe a state of injury.
• complicated: Complicated is an adjective that refers to something that is difficult to understand, which does not describe a physical state of body parts.
• expect: Expect is a verb that means to anticipate something, which does not fit grammatically or contextually in this sentence.

Correct answer: sophisticated

Explanation: The term 'sophisticated' is an adjective that describes the advanced nature of the sensory capacities of octopuses. It fits grammatically as it modifies 'sensory capacities' and contextually emphasizes their complexity.

Meaning: In this context, 'sophisticated' means having a high level of complexity or refinement in sensory abilities.

Wrong options:

• injured: Injured is an adjective that describes a state of harm, which does not fit as it does not describe sensory capacities.
• complex: Complex is an adjective that also describes something intricate, but it is not the best fit here as 'sophisticated' more accurately conveys the advanced nature of the sensory abilities.
• matter: Matter is a noun that refers to physical substance, which does not relate to sensory capacities.
• outside: Outside is an adverb or adjective that refers to the external part of something, which does not apply to the description of sensory abilities.
• complicated: Complicated is an adjective that refers to something that is difficult to understand, which does not accurately describe sensory capacities.

Correct answer: complex

Explanation: The word 'complex' is an adjective that describes the intricate nature of octopus behavior. It fits grammatically as it modifies 'behavior' and contextually aligns with the discussion of their advanced capabilities.

Meaning: In this context, 'complex' refers to behavior that is intricate and not simple.

Wrong options:

• injured: Injured is an adjective that describes a state of harm, which does not fit as it does not describe behavior.
• sophisticated: Sophisticated is an adjective that describes refinement, but it does not specifically address the intricacy of behavior as 'complex' does.
• matter: Matter is a noun that refers to physical substance, which does not relate to the description of behavior.
• outside: Outside is an adverb or adjective that refers to the external part of something, which does not apply to behavior.
• complicated: Complicated is an adjective that refers to something that is difficult to understand, which does not accurately describe behavior.

Correct answer: complicated

Explanation: The term 'complicated' is an adjective that describes the intricate nature of understanding octopus subjective experience. It fits grammatically as it modifies 'the question' and contextually reflects the complexity of the relationship between brain and body.

Meaning: In this context, 'complicated' means difficult to understand due to the intricate relationship being discussed.

Wrong options:

• injured: Injured is an adjective that describes a state of harm, which does not fit as it does not describe the nature of the question.
• sophisticated: Sophisticated is an adjective that describes refinement, which does not accurately convey the difficulty of understanding the question.
• matter: Matter is a noun that refers to physical substance, which does not relate to the complexity of the question.
• outside: Outside is an adverb or adjective that refers to the external part of something, which does not apply to the nature of the question.
• expect: Expect is a verb that means to anticipate something, which does not fit grammatically or contextually in this sentence.