Douglass use of strong connotative language builts toward the end of the text

Which three sentences in this excerpt from arthur conan doyle's "the contest" suggest that the author's tone is mocking?

Look at these frames from iqbal. which best describes the author's purpose in these frames of iqbal? to describe to the reader what happened at the wedding to show iqbal's pain and confusion after his debt increased to inform the reader about how iqbal escaped from the factory to persuade the reader to pay off the debt of child laborers mark this and return

The institute of international research is holding its annual convention. this year more than 500 scholars have been invited to hear research reports on many timely topics. approximately 250 big name scientists will be winging their way to washington, d.c. how can the underlined sentence be revised so that it fits the tone of the passage? a) approximately 250 people will be in washington, d.c. b) approximately 250 bigwigs will be flying to washington, d.c. c) approximately 250 science people will be going to washington, d.c. d) approximately 250 well-known scientists will be arriving in washington, d.c.