The National Highway that passes through Bihar is

N.H. No. 3
N.H. No. 8
N.H. No. 22
N.H. No. 23

The correct answer is: A. N.H. No. 3

National Highway 3 (NH 3) is a national highway in India that runs from Surat in Gujarat to Agartala in Tripura. It is one of the longest national highways in India, with a total length of 2,700 km (1,680 mi). The highway passes through the states of Gujarat, Maharashtra, Madhya Pradesh, Chhattisgarh, Jharkhand, Bihar, West Bengal, Assam, and Tripura.

In Bihar, NH 3 passes through the following cities:

  • Patna
  • Gaya
  • Bhagalpur
  • Muzaffarpur
  • Darbhanga
  • Saharsa
  • Purnia
  • Katihar
  • Araria
  • Kishanganj

NH 3 is a four-lane highway for most of its length. However, there are some stretches where it is a two-lane highway. The highway is well-maintained and is a major artery for transportation in India.

The other options are incorrect because they are not national highways that pass through Bihar.