You should turn it into an assertion because then with your essay or whatever you're using to back it up, you can affirm that your thesis statement is true/correct or w/e
Answer:
a word that shows sources that offer more information about the point on which the texts differ
Explanation:
The preposition in this case is From while the prepositional phrase is From China as it consists of the preposition from and the noun China.
Within four years organize and run an event to raise money for charity within four years earn a certification in personal finance