The standard form of the Mizo language is often referred to as Lusei. Lusei is the most widely spoken dialect of Mizo, and it is the official language of the Indian state of Mizoram. It is also spoken in the neighboring states of Assam and Manipur, as well as in Bangladesh and Myanmar. Lusei is a tonal language, with six tones: high, low, rising, falling, high-rising, and low-falling. The grammar of Lusei is relatively simple, with a subject-verb-object word order. The vocabulary of Lusei is derived from a variety of sources, including Tibeto-Burman languages, Tai languages, and English.
The other options are incorrect because they are not standard forms of the Mizo language. Hmar is a dialect of Mizo that is spoken in the Indian state of Mizoram. Mara is a dialect of Mizo that is spoken in the Indian state of Manipur. Pawi is a dialect of Mizo that is spoken in the Indian state of Mizoram and the neighboring state of Assam.