You didn't make it clear which parts of the sentence form which sentence segments, but I can tell you this:
CORRECT: In China, the city of
INCORRECT: kwangchow (formerly canton)
CORRECT: is situated in the
INCORRECT: southwest
CORRECT: part of China
Insidious means evil or bad, essentially. The sentence is saying gambling is a bad habit.
D, I think. It's the most logical.
Answer:
Option C
Explanation:
In simple words, Gallup poll and Harris poll are two private organisation involved in conducting opinion polls for general public. Both of these companies are America based.
These companies collect and analyze different kinds of data and are popular for their honest and diligent work ethics. These organisations have been very helpful to the state as well as other private entities. They conduct their polls worldwide.