Meaning: 'Inadequacy' refers to a feeling of not being good enough or lacking in some way.

Wrong options:

• validation: Validation refers to the act of confirming or approving something, which does not fit the emotional context of feeling insufficient.
• resilience: Resilience is the ability to recover from difficulties, which does not relate to feelings of self-worth in this context.
• authenticity: Authenticity refers to being genuine or true to oneself, which does not convey the sense of feeling inadequate.
• engagement: Engagement refers to involvement or participation, which does not address feelings of self-worth or comparison.
• diminished: Diminished means reduced in size or importance, but it does not directly express the feeling of inadequacy.
• chronic: Chronic describes something persistent or long-lasting, which does not fit the emotional state being described.

Correct answer: diminished

Explanation: The word 'diminished' is an adjective that describes a reduced sense of self-worth, fitting grammatically and contextually as it describes the impact of social media comparison on teenagers' self-esteem.

Meaning: 'Diminished' means reduced in size, importance, or value, particularly in the context of self-worth.

Wrong options:

• validation: Validation does not fit as it refers to the act of confirming something rather than describing a reduced sense of self-worth.
• resilience: Resilience is about recovery from difficulties, which does not relate to a decrease in self-worth.
• Inadequacy: Inadequacy describes a feeling of not being good enough, but it does not convey the sense of reduction in self-worth that 'diminished' does.
• authenticity: Authenticity refers to being genuine, which does not describe a reduction in self-worth.
• engagement: Engagement refers to involvement, which does not relate to the concept of diminished self-worth.
• chronic: Chronic describes something persistent, but it does not convey the idea of reduction in self-worth.

Correct answer: authenticity

Explanation: The term 'authenticity' fits grammatically as a noun that describes the quality of being genuine, which is affected by the pressure to maintain an online persona. This aligns with the context of teenagers struggling to express their true selves.

Meaning: 'Authenticity' refers to the quality of being genuine or true to oneself.

Wrong options:

• validation: Validation does not fit as it refers to confirming something rather than describing a quality affected by social media pressure.
• resilience: Resilience is about recovery from difficulties, which does not relate to the concept of authenticity.
• Inadequacy: Inadequacy describes a feeling of not being good enough, which does not fit the context of maintaining an online persona.
• diminished: Diminished refers to a reduction, which does not capture the essence of being genuine or authentic.
• engagement: Engagement refers to involvement, which does not relate to the quality of authenticity.
• chronic: Chronic describes something persistent, but it does not pertain to the quality of being genuine.

Correct answer: chronic

Explanation: The word 'chronic' is an adjective that describes the persistent use of social media, fitting grammatically and contextually as it indicates a long-lasting effect on sleep patterns and overall stress.

Meaning: 'Chronic' refers to something that is long-lasting or persistent, particularly in the context of behavior or conditions.

Wrong options:

• validation: Validation does not fit as it refers to confirming something rather than describing a persistent behavior.
• resilience: Resilience is about recovery from difficulties, which does not relate to the persistent use of social media.
• Inadequacy: Inadequacy describes a feeling of not being good enough, which does not fit the context of social media usage.
• authenticity: Authenticity refers to being genuine, which does not describe the nature of social media use.
• diminished: Diminished means reduced, which does not convey the idea of persistent use.
• engagement: Engagement refers to involvement, which does not relate to the concept of chronic behavior.