Which of the following sentences contains formal language, rather than informal language?

Having commas that separate the additional information “which had been parked on a steep hill” is the most correct use of the punctuation because it shows that the sentence can do without that piece of information. The additional information is only used to add more details but can still be excluded and that is why it is enclosed in commas.

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.

The word “wow” can certainly be marked as an interjection as the word is in useto show the emotion of “surprise” of the speaker about the ability of the addressed person to qualify the hurdle in the first attempt.

Inter in this case means “in between”

Signing in this sentence describes a noun as it is a “thing” rather than an action.

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

The use of “you” is what describes the second-person narrative voice and A is the correct answer since others use the first and third-person.

Using previous submitted work is plagiarism on itself even when that work belong to the student in question.

B shows both the simple and complex sides of organic gardening, which is exactly the correct support for the given thesis.

likewiseis used when you are comparing two methods, states, or situations and saying that they are similar.