It’s a good question to understand modifiers as well as parallelism.
Constructed at least as early as the Sui dynasty (A.D. 581-618), the Altar of Heaven is the oldest known altar used in Chinese state religious practice, more than 1,000 years older than a similar one in Beijing, it is the only altar found so far that predates the Qing dynasty (A.D. 1644-1912).
(A) Constructed at least as early as the Sui dynasty (A.D. 581-618), the Altar of Heaven is the oldest known altar used in Chinese state religious practice, more than 1,000 years older than a similar one in Beijing, it is
(Modifier)Constructed ….., the altar of heaven (subject) ….., (modifier) more than …., it
Check the option by removing the modifier (more than ), the altar of heaven it …
Clearly, A is out
(B) Constructed at least as early as the Sui dynasty (A.D. 581-618), the Altar of Heaven, the oldest known altar used in Chinese state religious practice, is more than 1,000 years older than a similar one in Beijing and is
The altar of heaven , (modifier), is ….. and is ….Perfect
(C) The Altar of Heaven, having been constructed at least as early as the Sui dynasty (A.D. 581-618) and the oldest known altar used in Chinese state religious practice, is more than 1,000 years older than a similar one in Beijing and
Having been - error, and the -error. C is out
(D) The Altar of Heaven, which was constructed at least as early as the Sui dynasty (A.D. 581-618) and is the oldest known altar used in Chinese state religious practice, more than 1,000 years older than a similar one in Beijing and is
The altar of heaven , (modifier ), more than …missing verb. D is out
(E) The oldest known altar used in Chinese state religious practice, more than 1,000 years older than a similar one in Beijing, the Altar of Heaven, which was constructed at least as early as the Sui dynasty (A.D. 581-618) and is
(Modifier), (modifier), the altar of heaven(subject) , modifier .
We cannot use two modifiers before introducing subject. E is out .
So, answer is B
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