Ace Java 2026: Rock Your 'Thinking in Java' Challenge!

ByteArrayInputStream represents a byte stream because it is used to read input as a sequence of bytes. This means that it reads the data as individual elements of bytes, as opposed to the other options. Character streams are used to read text data, object streams are used to serialize and deserialize objects, and data streams are used for reading primitive data types. Therefore, B is the most suitable choice for the type of stream represented by ByteArrayInputStream.