Read the passage from the tell-tale heart by edgar allan poe. then answer the question. what effect does the varied sentence length have on the tone of this passage

Read the passage and choose the correct punctuation marks

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.

In which two sentences does the author use an ironic tone toward the subject