A learner's licence issued under the Motor Vehicles Act, 1988, shall, subject to the other provisions of the statute, be effective for ____________ from the d licence.

Correct option is A

The correct answer is (a) A period of six months 

Explanation:
• Under the Motor Vehicles Act, 1988, a learner's licence is a temporary document that allows an individual to learn to drive under supervision.
• According to the statute, a learner's licence shall be effective for a period of six months from the date of its issue.
• The individual must apply for a permanent driving license within this period and pass the required driving test to drive legally without supervision. 

Information Booster:
• The primary condition for holding a learner's licence is that the learner must be accompanied by a person holding a valid permanent driving license, and the vehicle must display 'L' plates.