Meaning: 'Exceptionally' means 'to a greater degree than normal' or 'unusually,' highlighting that the level of light pollution in these areas is particularly severe.

Wrong options:

• absolutely: 'Absolutely' suggests totality but does not convey the comparative degree needed here, as it implies a definitive state rather than a relative one.
• completely: 'Completely' indicates totality, which does not fit the context of describing a high level of pollution; it lacks the comparative nuance required.
• rarely: 'Rarely' indicates infrequency, which is the opposite of what the sentence conveys about the prevalence of light pollution.

Correct answer: in some way

Explanation: The phrase 'in some way' fits grammatically and contextually as it suggests a degree of dependence on natural light cycles without being overly definitive. It aligns with the idea that light pollution affects species' behaviors in various, not absolute, manners.

Meaning: 'In some way' means 'to a certain extent' or 'in a manner that is not specified,' indicating that the impact of light pollution on species is significant but not uniform.

Wrong options:

• in no way: 'In no way' contradicts the context, suggesting no dependence at all, which is incorrect given the ecological implications discussed.
• by the way: 'By the way' is an informal phrase used to introduce a new topic, making it irrelevant in this context.
• in some ways: While similar, 'in some ways' implies multiple distinct methods of dependence, which is less precise than 'in some way' in this context.

Correct answer: relying

Explanation: The word 'relying' fits grammatically as it is a gerund that serves as the subject of the clause, indicating the turtles' dependence on light cues. Contextually, it emphasizes the turtles' behavior in navigating towards the sea, which is crucial to the passage's focus on their natural instincts.

Meaning: 'Relying' means 'depending on' or 'counting on,' highlighting that the turtles depend on light cues for their orientation.

Wrong options:

• imposing: 'Imposing' means to force something upon someone, which does not fit the context of turtles using light cues for navigation.
• figuring: 'Figuring' suggests understanding or calculating, which does not convey the sense of dependence required in this context.
• pouring: 'Pouring' refers to a liquid flow and is completely unrelated to the context of navigation or dependence on light.

Correct answer: them to move

Explanation: The phrase 'them to move' fits grammatically as it correctly uses the pronoun 'them' to refer back to 'hatchlings,' maintaining pronoun consistency. Contextually, it indicates that the artificial lighting causes the hatchlings to change their direction, which is a critical point in the passage.

Meaning: 'Them to move' means that the hatchlings are prompted or caused to move away from the sea due to the light, emphasizing the negative impact of artificial lighting.

Wrong options:

• it to move: 'It to move' incorrectly uses 'it,' which does not refer to any singular noun in the context, leading to confusion.
• which to move: 'Which to move' is grammatically incorrect as it does not properly connect to the subject of the sentence, making it unclear.
• that to move: 'That to move' is also incorrect as it does not maintain the necessary pronoun reference to 'hatchlings,' leading to ambiguity.