Explanation:

- Option 1: 1990

- This date is not related to the enactment of the Consumer Protection Act. It was enacted earlier.

- Option 2: 1986

- This is the correct answer.

- The Consumer Protection Act was indeed enacted in 1986. It aimed to protect consumers' interests and establish authorities for consumer grievance redressal.

- Option 3: 1992

- This year is not relevant to the enactment of the Consumer Protection Act. It came into force before 1992.

- Option 4: 1985

- This year is also incorrect. The Act was passed a year after this.