In line 4 why is truth described as “the pure inmate of thy glowing breast”

Truth is described as "the pure inmate of thy glowing breast" because it brings peace to the earth or any space that is founded on liberty.

Explanation:

This sonnet titled "To Liberty" (1796) was written by Mary Robinson.  Mary Robinson, an English actress, poet, dramatist, novelist, and celebrity figure, describes truth as a resident, inmate, and companion of Liberty.  Freedom or liberty births truth and is also accompanied in its journey by truth because truth flourishes amidst liberty.  Without liberty, truth does not reign supreme.  Even when it survives in an oppressive environment, it yearns for liberty to become stupendously fruitful.

either online or traditional classroom can work for students. which is better will depend on students and teacher. students may have trouble following a lesson in classroom while they can study at their own pace online. other students may have trouble staying focus on their own in online classes. teachers are more used to classroom teaching but they may also be more worry about their jobs teaching online classes and work harder.