Step 1: Concept
Understanding the plot and context of the film 'Social Network' by David Fincher.
Step 2: Meaning
The question asks about the main subject matter of the movie, which is a biographical drama focusing on the creation of a social networking platform.
Step 3: Analysis
In the film 'Social Network', directed by David Fincher, the central narrative revolves around the development and legal disputes surrounding Facebook. The story delves into the early days of Mark Zuckerberg's journey to create this now-ubiquitous social media giant. Key elements include Zuckerberg’s college life at Harvard University, his initial idea for a website called Facemash, which later evolved into Facebook, and the subsequent legal battles with co-founder Eduardo Saverin over ownership and control.
Option B (Instagram) was launched much later in 2010 by Kevin Systrom and Mike Krieger. Option C (LinkedIn) is primarily a professional networking site founded in 2003 by Jeff Weiner, Reid Hoffman, and Konstantin Guericke. Option D (X, which represents Twitter) was created in 2006 by Jack Dorsey, Biz Stone, and Evan Williams.
Step 4: Conclusion
The film 'Social Network' is about the development of Facebook.
Final Answer: (A)