Which platform is primarily used for professional networking and job searching?

LinkedIn is specifically designed for professional networking and job searching, making it the most suitable choice among the options listed. The platform allows users to create profiles that emphasize their professional experiences, skills, and achievements. It connects individuals with potential employers, colleagues, and industry professionals. Users can also join industry-specific groups, participate in discussions, share content related to their field, and apply for jobs directly through the site. This focus on professional relationships, recruitment, and career development distinguishes LinkedIn from social media platforms that primarily cater to personal connections or entertainment, such as Facebook, Twitter, and Instagram.