Final answer:
The play set on the eve of May Day, as noted by Samuel Johnson, is 'A Midsummer Night's Dream'.
Step-by-step explanation:
Samuel Johnson noted that William Shakespeare "so carefully informs us" that the play in question is set on the eve of May Day. The correct answer to the question is c) A Midsummer Night's Dream. Despite its title suggesting a summer setting, the play is indeed connected with May Day festivities. Shakespeare's works, including A Midsummer Night's Dream, were characterized by their masterful use of language and poetic elements, such as iambic pentameter. These plays were performed during daytime with no artificial lighting, showing Shakespeare's profound understanding of theatrical conventions and the subtle art of performance.