Correct Answer: A

Rationale: The correct spelling is 'potatoes,' with the correct plural form being used in this context. The other choices are spelled correctly: 'saliva,' 'conservators,' and 'restore.' 'Saliva' refers to a bodily fluid, 'conservators' are professionals who work on art conservation, and 'restore' means to bring something back to its original condition or state.

Correct Answer: B

Rationale: The correct punctuation in this case is to use a comma (,) to set off the nonrestrictive clause 'whose death shocked America in April of 2016.' This clause provides additional information about the artist Prince without changing the essential meaning of the sentence. Choice A has a semicolon (;) which is incorrect as it separates two closely related independent clauses. Choice C uses em dashes (-) which are incorrect as they should be used for emphasis or to set off information. Choice D uses a colon (:) which is incorrect as it introduces a list or an explanation, not additional information about the artist Prince. Therefore, the correctly punctuated sentence is: 'The artist Prince, whose death shocked America in April of 2016, was one of the most successful musical artists of the last century.'

Correct Answer: D

Rationale: The correct plural form of 'potato' is 'potatoes.' In English, most plural nouns form by adding '-es' or simply '-s' to the singular form. Therefore, 'potatoes' is the correctly formed plural noun in this list. The other choices, 'vertebrae,' 'geese,' and 'octopuses,' are the correct plural forms of 'vertebra,' 'goose,' and 'octopus,' respectively. They demonstrate the common rule of adding '-es' or '-s' to form plural nouns.

Correct Answer: A

Rationale: The correct spelling is 'potatoes,' with the correct plural form being used in this context. The other choices are spelled correctly: 'saliva,' 'conservators,' and 'restore.' 'Saliva' refers to a bodily fluid, 'conservators' are professionals who work on art conservation, and 'restore' means to bring something back to its original condition or state.

Correct Answer: A

Rationale: The complete subject in a sentence includes all the words that describe the main focus of the sentence. In this case, the complete subject is "Sandra's principal reason for choosing the job" as it encompasses all the relevant details about Sandra and her reason for selecting the job. Choice A is the correct answer because it provides the most comprehensive and specific information, making it the complete subject. Choices B, C, and D are incorrect as they do not include all the necessary elements to form the complete subject and do not convey the full context of the sentence.