Meaning: 'Needs' refers to the essential requirements or necessities that individuals have, particularly in the context of education and personal development.

Wrong options:

• leads: The word 'leads' is a verb that implies guiding or directing, which does not fit the context of fulfilling requirements.
• seeds: The term 'seeds' is a noun that refers to the reproductive part of a plant, which is unrelated to the context of education and does not make sense here.
• breeds: 'Breeds' is a verb that refers to producing or causing something to happen, which does not align with the idea of addressing the requirements of a population.

Correct answer: advantages

Explanation: The word 'advantages' is a noun that denotes the benefits or favorable aspects of distance learning, making it contextually appropriate as it introduces a discussion about the positive features of this educational method.

Meaning: 'Advantages' means the beneficial factors or positive aspects that make distance learning appealing to students.

Wrong options:

• basics: The term 'basics' refers to fundamental principles or elements, which does not capture the positive aspects being discussed.
• ranges: 'Ranges' is a noun that refers to a variety or scope, which does not fit the context of discussing benefits.
• sources: The word 'sources' refers to origins or providers of information, which is not relevant to the discussion of benefits.

Correct answer: those

Explanation: The word 'those' is a demonstrative pronoun that refers to specific people previously mentioned, fitting grammatically and contextually as it identifies individuals who are struggling with balancing their commitments.

Meaning: 'Those' is used to refer to particular people or things that have been mentioned or are understood in the context.

Wrong options:

• them: 'Them' is an object pronoun and does not serve as a subject in this context, making it grammatically incorrect here.
• what: The word 'what' is an interrogative pronoun that does not fit the context of referring to a specific group of people.
• when: 'When' is an adverb that refers to time, which does not appropriately refer to the individuals struggling with distance learning.

Correct answer: Since

Explanation: The word 'Since' is a conjunction that introduces a reason or cause, fitting well in the context as it explains why students can learn from home, linking the absence of on-campus courses to the flexibility of learning.

Meaning: 'Since' means because or as, indicating a causal relationship between the lack of on-campus courses and the ability to learn from various locations.

Wrong options:

• If: 'If' is a conditional conjunction that does not convey the causal relationship needed in this context.
• When: The word 'When' is a temporal conjunction that indicates time, which does not fit the causal context of the sentence.
• Where: 'Where' is a conjunction that indicates a place, which does not appropriately connect the ideas of learning flexibility and the absence of on-campus courses.