The correct answer is Kathiawadi.
Kathiwadi is a Gujarati dialect spoken in the Kathiawar region of Gujarat, India. It is characterized by a distinct nasalized pronunciation, which is due to the influence of the Marathi language. The other options, Charotari, Surti, and Mehsani, do not have a distinct nasalized pronunciation.
Charotari is a Gujarati dialect spoken in the Charotar region of Gujarat, India. It is characterized by a fast and clipped pronunciation.
Surti is a Gujarati dialect spoken in the Surat district of Gujarat, India. It is characterized by a soft and mellow pronunciation.
Mehsani is a Gujarati dialect spoken in the Mehsana district of Gujarat, India. It is characterized by a strong and guttural pronunciation.