Internet was developed in the

Answer: Option B

The correct answer is Option B: 1960s.
Let's break down why:
The Internet as we know it didn't just appear overnight.
It evolved from earlier research and networking projects.
Option A (1950s): While there was early computing research in the 1950s, it wasn't directly related to the Internet's development.
Option B (1960s): The Internet's conceptual foundation and key technologies started taking shape in the 1960s.

Specifically:
The ARPANET (Advanced Research Projects Agency Network), often considered the Internet's precursor, was established in 1969. This used packet switching, a key technology for the Internet.

Option C (1970s): The 1970s saw important protocol developments like TCP/IP, which are crucial for how the Internet works. But the *initial* development began earlier.
Option D (1980s): The 1980s were a period of growth and standardization for the Internet, but not its origin.
Option E (1990s): The 1990s mark the rise of the World Wide Web and the widespread *adoption* of the Internet by the public. Again, the fundamental development came *before* this.

Therefore, the 1960s are considered the decade when the initial development and fundamental concepts of the Internet were established.