It’s very difficult to find . . . . . . . . work at the moment. A. a B. an C. the D. no article

If the sentence were referring to a specific type of work, such as “It’s very difficult to find a job in the tech industry,” then an article would be needed. Similarly, if the sentence were referring to a specific job, such as “It’s very difficult to find the job I want,” then an article would also be needed.

However, in the general statement “It’s very difficult to find work at the moment,” no article is needed.