The correct passive form of the given sentence is:

☀ A film, based on this novel, has been made.

Let's break down the options:

1. A film was based on this novel and made. (Incorrect) This option separates the passive construction into two independent clauses, which changes the meaning of the original sentence. It suggests that first, the film was based on the novel, and then it was made. The original sentence implies that the film was made based on the novel.

2. A film have been made based on this novel. (Incorrect) This option uses the wrong auxiliary verb "have been." The correct form should be "has been" to agree with the singular subject "a film."

3. A film, based on this novel, has been made. (Correct) This sentence correctly uses the passive voice and conveys the same meaning as the original sentence. It maintains the phrase "based on this novel" in the correct position within the sentence.

4. A film has been based and made on this novel. (Incorrect) This option incorrectly combines "based" and "made" with "has been." The correct form should be "has been made," as shown in option 3. Additionally, it changes the meaning by implying that the film has been both based and made on the novel, whereas the original sentence implies that the film has been made based on the novel.