Many rivers in Mizoram have a distinctive flow direction flowing:

The correct answer is: a) North to south.

The rivers in Mizoram flow from the north to the south because of the Himalayas. The Himalayas are a mountain range that runs along the northern border of India. The mountains block the monsoon rains from reaching the northern part of India, so the rivers in Mizoram are fed by the rain that falls on the southern slopes of the Himalayas.

The other options are incorrect because:

• Option b) is incorrect because the rivers in Mizoram do not flow from the south to the north.
• Option c) is incorrect because the rivers in Mizoram do not flow from the east to the west.
• Option d) is incorrect because the rivers in Mizoram do not flow in circular patterns.