In India, in which one of the following types of forests is teak a dominant tree species?

Tropical moist deciduous forests are primarily found in the eastern part of India, including the northeastern states, along the foothills of the Himalayas, Jharkhand, West Orissa, Chhattisgarh, and on the eastern slopes of the Western Ghats.

Teak is the most dominant tree species in these forests. Other commercially significant species include bamboos, sal, shisham, sandalwood, khair, kusum, arjun, and mulberry.

Hence, option A is the correct answer.

Sources:

• NCERT Class 9 Geography Chapter 5 (Page 52)