Which of the following is an example of a speech about an object?

A speech about vintage clothing is a clear example of a speech focused on an object because it specifically examines a particular item or category of items—vintage clothing. This type of speech centers on discussing characteristics, historical significance, and the aesthetic or functional qualities of clothing items that are considered vintage. It can highlight styles, trends, and even the cultural context surrounding these garments, making the clothing itself the main focus of the speech.

In contrast, the other options deal more with concepts or broader topics. For instance, climate change addresses an issue affecting the environment, personal development focuses on growth strategies and concepts, and world history covers a vast array of events and ideas over time. These topics do not center around a singular, tangible item, which differentiates them from the speech about vintage clothing.