Step 1: Understand the meaning of "ostentatious."
"Ostentatious" means showy or designed to impress others through display. This suggests something excessive and flamboyant.
Step 2: Analyze the options.
"Lavish" means extravagant or abundant, which conveys a sense of excessiveness, making it a synonym for "ostentatious."
"Simple" and "Modest" are antonyms of "ostentatious," as they refer to things that are understated.
"Unassuming" also implies simplicity and lack of display, making it the opposite of "ostentatious."
Step 3: Conclusion.
The word "lavish" best matches the meaning of "ostentatious." Thus, the correct answer is: \[ \boxed{{Lavish}}. \]
Five friends A, B, C, D, and E are sitting in a row facing north, but not necessarily in the same order:
B is to the immediate left of C
E is not at any of the ends
D is to the right of E but not next to C
A is at one of the ends
Who is sitting in the middle?