The correct answer is D. no article.
The article “a” or “an” is used before a singular noun that refers to a general or unspecified thing. In this case, the noun “church” is not being used in a general or unspecified way. It is referring to a specific church, the one on the corner. Therefore, no article is needed.
The article “the” is used before a singular noun that refers to a specific or unique thing. In this case, the noun “church” is not being used in a specific or unique way. It is referring to one of many churches, the one on the corner. Therefore, the article “the” is not needed.