The Channar Revolt of the early 19th century challenged restrictions on:

Clothing for lower-caste women
Temple entry
Education rights
Travel for oppressed castes

The correct answer is: A) Clothing for lower-caste women.

The Channar Revolt was a revolt by lower-caste women in the early 19th century in the princely state of Travancore in India. The revolt was led by a woman named Kunjukuttan Channar, who was a member of the Pulaya caste. The Pulayas were a lower-caste group who were considered to be untouchables. They were not allowed to wear upper-caste clothing, such as the mundu, which is a type of cloth that is wrapped around the waist. They were also not allowed to enter temples or to use public roads.

The Channar Revolt was a protest against these restrictions. The women who participated in the revolt wore mundus and went to temples. They also attacked the houses of upper-caste men. The revolt was eventually suppressed by the Travancore government, but it had a significant impact on the lives of lower-caste people in Travancore. It led to the removal of some of the restrictions that were placed on them, and it also helped to raise awareness of the problems faced by lower-caste people.

The other options are incorrect because they do not accurately reflect the focus of the Channar Revolt. Option B, temple entry, was not a major issue in the revolt. Option C, education rights, was not a major issue for lower-caste women in the early 19th century. Option D, travel for oppressed castes, was not a major issue in the revolt.