Which sentence uses a partitive construction correctly with the uncountable noun "information"?
"Information" is uncountable in English and has no plural form and cannot take "a/an" directly. To refer to one discrete unit of information, English uses a partitive construction: "a piece of information". Option B is correct. Option A ("an information") and option D ("a information") both incorrectly apply the indefinite article directly to an uncountable noun. Option C ("informations") incorrectly pluralizes an uncountable noun. Other common uncountable technical nouns that need partitives: "a piece of advice", "a piece of hardware" (informal), "an item of equipment".
2 / 5
Which partitive expression best introduces a group of related configuration values in a technical description?
"A set of" is the standard partitive/collective expression for a defined, related group of items — "a set of configuration values", "a set of environment variables", "a set of test cases". Option B is correct. "A piece of" (option A) is used for a single unit of an uncountable noun, not a defined group of countable items, so it does not fit here. "A bit of" (option C) typically pairs with uncountable nouns like "a bit of luck" or "a bit of context", and sounds informal/imprecise for technical specification. "A slice of" (option D) is used metaphorically (e.g., "a slice of traffic") but is not standard for configuration values.
3 / 5
Which sentence correctly uses "a series of" to describe a sequence of related events in an incident report?
"A series of" is followed by a plural countable noun ("failures"), and the whole partitive phrase functions as a singular subject, taking a singular verb ("caused", not "have caused"). Option B is correct: "A series of cascading failures caused the outage" — plural noun after "of", singular verb, singular outage (the specific outage being described). Option A wrongly uses the singular "failure" after "series of". Option C changes "outage" to plural, which is possible but changes the meaning (multiple outages) without support from context. Option D omits "of" entirely, which is required after "series" in this construction.
4 / 5
Which sentence correctly uses "a number of" versus "the number of" in a status report?
"A number of" means "several/many" and takes a plural verb: "A number of tests are failing." "The number of" refers to the specific count itself (a singular concept) and takes a singular verb: "the number of failures is growing." Option B applies both rules correctly. Option A wrongly uses singular "is" after "a number of tests". Option C swaps the two constructions incorrectly. Option D correctly starts with "a number of tests are" but then wrongly uses plural "are" with "the number of failures", which should be singular "is".
5 / 5
Which sentence uses the most precise partitive expression for describing one discrete unit of "equipment" needed for a data center rack?
"Equipment" is uncountable, like "information" and "furniture" — it has no plural form and cannot take "a/an" directly. To refer to a single countable unit, use the partitive "a piece of equipment" (option C). Options A and D incorrectly attach an indefinite article directly to "equipment". Option B incorrectly pluralizes it ("equipments"), a common non-native-English error. Partitive constructions like "a piece of", "an item of", and "a unit of" are the standard way to count otherwise uncountable technical nouns.