Which of the following sentences is the most formal in style?

In Option A, the em dash is used to set off the list of tools (hammers, saws, chisels) from the main part of the sentence. The em dash indicates a stronger break than a comma and helps to provide clarity and emphasis on the list of tools the carpenter must use. The sentence is correctly punctuated, and the tools are appropriately separated by the em dash.

D does not use complete words to explain and also uses the word “ton” which is informal in nature as compared to other sentences.

The subject is in plural “tennis balls” and is supported by a plural verb “roll” which makes D the correct use of subject-verb agreement.

Although means 'in spite of something'.it is a subordinating conjunctions.This means thatthe clause which they introduce is a subordinate clause, which needs a main clause to make it complete

Preliminary is what comes first and hence best shows the introductory parts.

A capital letter is usedfor the first word of a sentence and for all proper nouns (words that name a specific person, place, organization, or thing). Capitalization in D is used to indicate the organization and compared to other others that do not follow the requirements for using capital letters, it makes D the correct answer.

A citation is normally used to cite specific information that has been researched by other people. D is only showing a location and not necessarily a product of a research and hence does not need any citation.

A thesis statement is mostly used in the introduction to guide the reader on what to expect in the rest of the essay.

An adjective isa descriptive word that modifies (describes) a noun. In this case, lively is used to describe the lady (noun).

C is the correct spelling of the word foreseeable.