The correct answer is parenthesis. A parenthesis normally appears in sentences when extra information unrelated to the main idea of the sentence is inserted. The trick in knowing if a phrase can be included in a parenthesis is when you take it out and the idea of the sentence is intact.
It is False, hope this helpd :)
That which we call a rose by another name would smell as sweet.
I hope this helps! :)
The two subjects of the sentence are Colonel Lloyd and his "finely cultivated garden".