Which comparison operator would you use to test if someone is at least 21 years old?

Which of the following statements is false?

a. A DirectoryStream enables a program to iterate through the contents of a directory. b. Character-based input and output can be performed with classes Scanner and Formatter. c. A relative path contains all the directories, starting with the root directory, that lead to a specific file or directory. d. Every file or directory on a disk drive has the same root directory in its path.

A data management feature that allows you to focus on a subset of the data in a worksheet is called _____.

A. Selecting B. Filtering C. Extracting D. Formatting