Directions: Read each sentence to find out whether there is any grammatical or idiomatic error in it. In the following sentences, a part is highlighted in each sentence which is error-free, the error, if any, will be in any other part of the sentence. The letter of that part is the answer. If there is 'No error', the answer is (e). (Ignore errors of punctuation, if any). Cybersecurity firms are turning (A)/ to integrated platforms to offer (B)/ **comprehensive online security for both**/ B2B and end-users, as standalone tools (C)/ struggle to meet enterprise security needs. (D)

### Concept & Grammar Rule Parallelism with Correlative Conjunctions. The conjunction pair "both... and..." must connect grammatically equal elements (e.g., two nouns, two adjectives). ### Step-by-Step Solution - The sentence uses the correlative conjunction "both... and..." to link two beneficiaries of the security. - The phrase given is "both B2B and end-users". - "End-users" is a plural noun. However, "B2B" (business-to-business) is an adjective describing a type of transaction or client. - To maintain parallelism, "B2B" must be followed by a noun, such as "B2B clients" or "B2B customers," so that it matches the noun structure of "end-users". - Hence, the error lies in part (C). ### Exam Strategy & Shortcut Whenever you spot correlative conjunctions like "both... and," "either... or," or "neither... nor," immediately check the words directly following each part to ensure they belong to the same part of speech. ### Common Pitfall Treating common business acronyms (like B2B) as standalone nouns when they function strictly as adjectives in formal grammar. ### Final Answer Therefore, the correct answer is **C**.