In (D), replace "persists" with "persist." The subject of the sentence is "implementation challenges," which is plural. Therefore, the verb should also be in the plural form, i.e., "persist." The sentence would then read: "The government has announced new guidelines to improve air quality in urban areas, but the effectiveness of these measures remains to be seen as implementation challenges persist." Therefore, (D) is the correct answer.
Which method of Vegetable gardening is called as Extensive gardening?
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Which of the following parameter is not included in the Soil health card?
Botanical name of Lemon grass :
Best export variety of mango is
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A type of grafting in which shallow, downward and inward cut ensuring V-shape incision in lower portion of rootstock and matching cut on the scion is ma...
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