The Mizo National Famine Front (MNFF) was formed in the 1960s in response to:

The correct answer is: a) Government neglect during a famine.

The Mizo National Famine Front (MNFF) was formed in 1966 in response to the Mizo famine of 1964-65. The famine was caused by a combination of factors, including drought, crop failure, and government neglect. The MNFF demanded that the government provide relief to the famine-stricken people and take steps to prevent future famines.

The other options are incorrect because:

• Option b) is incorrect because the Mizo National Famine Front was formed in 1966, while the suppression of Mizo identity began in the early 20th century.
• Option c) is incorrect because the influx of refugees from Bangladesh did not begin until the 1970s.
• Option d) is incorrect because border disputes with Myanmar did not become a major issue until the 1980s.