The answer is Neither toxic air pollutants nor loud engine noise is a problem for food cart operators who use curbside charging stations instead of gasoline-powered generators.
Explanation:
An error in subject-verb agreement occurs if a singular subject is followed by a plural verb or vice-versa, considering the subject and verb should always agree in number. In the case of one singular and one plural subject connected by the conjunction neither/nor, the common recommendation is that the verb agrees with the second noun or the noun closer to the verb. In the sentence presented this noun is "loud engine noise" which is a singular noun and therefore the correct verb form should be "is" which is singular rather than "are" which is the plural form.
I believe the answer is:
D). Wilder values the beauty and simplicity of daily life.
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Canadian bedrock more than 4 billion years old may be the oldest known section of the Earth's early crust.
Scientists at the Carnegie Institution of Washington and McGill University in Montreal used geochemical methods to obtain an age of 4.28 billion years for samples of the rock, making it 250 million years more ancient than any previously discovered rocks.
The findings, which offer scientists clues to earliest stages of our planet's evolution, are published in this week's issue of the journal Science.
D. Nouns. Gerunds or gerund phrases ending in -ing are forms of a verb that when used in a sentence act as nouns.