The Supreme Court found the burning of a flag to be protected free speech in Texas v. Johnson primarily because the Court recognized that the action is symbolic speech. This means that the act of flag burning represents a specific viewpoint or message, particularly in this case, a political protest against the government or its policies. The Court ruled that expression, even if it is offensive to some, must be protected to uphold the values of free speech enshrined in the First Amendment.
Thus, the correct response is:
This action is symbolic speech. The action symbolizes a viewpoint.