The most appropriate piece of information for the middle of the Venn diagram, representing a similarity between "Designed to Detain" and "In Their Own Words," would be:
Both texts are primary accounts from the perspective of immigrants who went to the Angel Island immigration station.
This captures the shared characteristic of both texts being primary accounts and reflects their general focus on the experiences of immigrants. The other options provide specific details about treatment or conditions at the station, but the first option identifies a broader commonality.