Where does the Brahmaputra River enter the plains of Assam from Arunachal Pradesh?

The correct answer is: a) Near Pasighat.

The Brahmaputra River enters the plains of Assam from Arunachal Pradesh near Pasighat. The river flows through the Himalayas and enters the plains of Assam at a point near Pasighat. The river then flows through the plains of Assam and into Bangladesh.

The other options are incorrect because they are not the places where the Brahmaputra River enters the plains of Assam from Arunachal Pradesh.

• Option b: Near Tezu is incorrect because the Brahmaputra River does not flow near Tezu.
• Option c: Near Along is incorrect because the Brahmaputra River does not flow near Along.
• Option d: Near Bomdila is incorrect because the Brahmaputra River does not flow near Bomdila.