Meaning: The term 'were' indicates that something existed or was true in the past.

Wrong options:

• now travel: The phrase 'now travel' is in the present tense, which does not fit the historical context of the sentence that discusses a past situation.
• has actually led: 'Has actually led' is in the present perfect tense, which is inappropriate for describing a past state of visibility.
• have almost put: 'Have almost put' is also in the present perfect tense, which does not match the past context required here.
• significant than: 'Significant than' is grammatically incorrect as it lacks a verb and does not fit the context of visibility.
• movement: 'Movement' is a noun and does not serve as a verb to indicate a state of being in the past.
• influence: 'Influence' is also a noun and does not fit grammatically as a verb in this context.

Correct answer: has actually led

Explanation: The phrase 'has actually led' is in the present perfect tense, which is appropriate here as it indicates a change that has occurred over time, linking the improvement in housing and space to the current situation of children spending less time outdoors.

Meaning: 'Has actually led' means that something has caused a particular result or outcome in the present.

Wrong options:

• were: 'Were' is the past tense of 'to be' and does not convey the causative relationship needed in this context.
• now travel: 'Now travel' is in the present tense and does not indicate a cause-and-effect relationship relevant to the sentence.
• have almost put: 'Have almost put' is in the present perfect tense but does not relate to the improvement in housing and space.
• significant than: 'Significant than' is grammatically incorrect and does not fit the context of causation.
• movement: 'Movement' is a noun and does not serve as a verb to indicate a change in the context of the sentence.
• influence: 'Influence' is also a noun and does not fit grammatically as a verb in this context.

Correct answer: have almost put

Explanation: The phrase 'have almost put' is in the present perfect tense, indicating an ongoing effect of parents' worries on children's street culture. It suggests that this influence has been building up to the present time.

Meaning: 'Have almost put' means that something has nearly caused a particular outcome or effect.

Wrong options:

• were: 'Were' is the past tense of 'to be' and does not convey the ongoing impact of parents' worries on children's culture.
• now travel: 'Now travel' is in the present tense and does not relate to the effect of worries on street culture.
• has actually led: 'Has actually led' is in the present perfect tense but does not fit the context of parents' worries specifically.
• significant than: 'Significant than' is grammatically incorrect and does not fit the context of the sentence.
• movement: 'Movement' is a noun and does not serve as a verb to indicate an action taken by parents.
• influence: 'Influence' is also a noun and does not fit grammatically as a verb in this context.

Correct answer: are now travelling

Explanation: The phrase 'are now travelling' is in the present continuous tense, which is appropriate here as it indicates an ongoing action that children of all classes are currently engaging in, contrasting with the previous decline in street culture.

Meaning: 'Are now travelling' means that children are currently going to different places, indicating a change in their activities.

Wrong options:

• were: 'Were' is the past tense of 'to be' and does not indicate the current action of travelling.
• now travel: 'Now travel' is in the present tense but lacks the continuous aspect that 'are now travelling' provides.
• have almost put: 'Have almost put' is in the present perfect tense and does not relate to the action of travelling.
• significant than: 'Significant than' is grammatically incorrect and does not fit the context of travelling.
• movement: 'Movement' is a noun and does not serve as a verb to indicate an action taken by children.
• influence: 'Influence' is also a noun and does not fit grammatically as a verb in this context.

Correct answer: movement

Explanation: The word 'movement' is a noun that fits grammatically and contextually as it refers to the act of children being able to move independently. It aligns with the discussion of children's activities being curtailed.

Meaning: 'Movement' refers to the act of moving or the ability to move freely.

Wrong options:

• were: 'Were' is the past tense of 'to be' and does not fit as a noun in this context.
• now travel: 'Now travel' is a verb phrase and does not fit as a noun to describe the concept of movement.
• have almost put: 'Have almost put' is a verb phrase and does not fit as a noun in this context.
• significant than: 'Significant than' is grammatically incorrect and does not fit the context of describing a noun.
• influence: 'Influence' is a noun but does not specifically refer to the act of movement, making it less suitable here.