No more than hundred of workers probally thousands
The right option is B.
Explanation:
When writing a paper, it is important to cite sources correctly to give credit to the original authors, otherwise, it would be a case of plagiarism.
Plagiarism is the use of someone else's work without giving them the proper credit. In other words, authors are protected by intellectual property rights, for which plagiarism is an unethical practice.
An example of a prepositional phrase is, “With a reusable tote in hand, Matthew walked to the farmer's market.” Every prepositional phrase is a series of words consisting of a preposition and its object. In the example above, “with” is the preposition and “reusable tote” is the object.