Final answer:
The legal and regulatory concern with obtaining mass information from social media is Privacy (Option D). This pertains to the confidentiality and control of personal information, a topic that has gained prominence in light of data breaches and increased digital data storage, as well as the balancing act between security and freedom of expression.
Step-by-step explanation:
The legal and regulatory concern in obtaining mass information from social media is D. Privacy. Privacy refers to the right of individuals to keep their personal information confidential and control who can access it. With the increased use of digital technology, concerns about how personal information is collected, used, and shared have become more prominent. Federal and state laws, such as the Children's Online Privacy Protection Act of 1998 (COPPA) in the United States and the General Data Protection Regulation (GDPR) in Europe, have been implemented to safeguard personal data.
Privacy concerns arise when businesses or governments collect and analyze mass information, which could lead to surveillance and a potential reduction in freedom of expression and freedom of ideas. Balancing the need for security and the protection of individual privacy remains a significant societal challenge. Online privacy and security have gained attention due to large-scale data breaches affecting millions, and with more people expressing concern about personal information available online, these concerns are only set to increase.