What is most closely a major theme of this excerpt in a raisin in the sun

Explanation:

A Raisin in the Sun is essentially about dreams, as the main characters struggle to deal with the oppressive circumstances that rule their lives. The title of the play references a conjecture that Langston Hughes famously posed in a poem he wrote about dreams that were forgotten or put off.

im not to sure

martians or other types of aliens represent a unique fear as opposed to zombies. vampires and other types of monsters.   in most sci-fi stories, aliens come from other worlds and have different or more advanced technology.   abductions and experimentation on human bodies that involve these technologies, or the use of these technologies against human beings and the use of unknown "powers", are a type of fear that's different from that of other types of monsters.