In the sentence, identify the segment which contains the grammatical error.  Several work of art were stolen from the town museum yesterday.

The grammatical error of the sentence is in option A. As a countable noun, “work” refers to something created, such as a book, painting, piece of music, or sculpture.  For example: My father bought the complete works of P.B. Shelley for me. When we do something that requires effort, as part of a job or for school, “work” is an uncountable noun. For example,   Hard work is good for you. It keeps you fit. (work as physical activity) In the given sentence ‘work’ refers to art, thus, it will be a countable noun. Moreover, ‘several’ is used and after it, we use plural nouns. In order to make the sentence correct, replace “work” with “works”. Correct sentence: ‘Several works of art were stolen from the town museum yesterday.’