Ubiquitous means present everywhere; scarce means rare or uncommon, which is the opposite. Others are synonyms.
'Number' is singular, requiring 'has', not 'have'. Subject-verb agreement error.
The passage explicitly states 'concerns about data privacy and the need for regulatory frameworks remain' as the main concern.
A) Cybersecurity threats have increased dramatically in recent years.
B) Hackers are targeting critical infrastructure and financial institutions.
C) Organizations must invest in robust security measures.
D) The cost of cyber attacks to the global economy exceeds billions annually.
Logical flow: general threat (A), specific targets (B), financial impact (D), and necessary action (C).
A) The team have decided to postpone the meeting.
B) The data suggests that the trend is declining.
C) Neither of the candidates were suitable.
D) Everyone in the class has submitted their assignments.
'Neither' is singular and should be followed by 'was', not 'were'. Sentence C contains the error.
Discourse means a discussion or talk; it fits contextually. Other options don't match the context.
A) Renewable energy sources are crucial for sustainable development.
B) Solar and wind power have become increasingly cost-effective.
C) India aims to achieve 500 GW of renewable capacity by 2030.
D) This transition requires significant infrastructure investment and policy support.
Begins with importance (A), then examples and cost-effectiveness (B), India's specific target (C), and concludes with requirements (D).
In conditional sentences (subjunctive mood), 'were' is used with all subjects, including 'I'. The correct form is 'If I were you'.
A) Social media platforms have become powerful tools for activism and social change.
B) Young people are leveraging these platforms to raise awareness about critical issues.
C) However, misinformation and echo chambers pose significant challenges.
D) Balancing free speech with responsible content moderation remains a key challenge.
Introduces the role of social media (A), explains how young people use it (B), identifies problems (C), and concludes with main challenge (D).
Ameliorate means to make something better; improve is the closest synonym. Worsen is an antonym.
