Step 1: Understand the context of Bal Gangadhar Tilak's arrest.
Tilak was a prominent leader in the Indian independence movement, known for his radical approach in opposing British colonial rule.
In 1897, he was arrested and tried for sedition due to his involvement in nationalist activities, including the publication of articles that criticized British rule.
Step 2: Recall the historical event.
In 1897, the British government charged him with sedition and he was sentenced to six years of imprisonment.
Step 3: Identify the correct year.
- The correct year of his imprisonment for treason is 1897.