26. Which of the following keys can be pressed to exit less?
Answer: D
The key that can be pressed to exit less is 'q'.
Pressing the 'q' key will successfully exit the less command in a Unix-like operating system, making it the correct choice.
A) 1
Pressing the '1' key does not have any function related to exiting the less command. It may perform other unrelated actions, but it is not designed for exiting.
B) x
The 'x' key is not used to exit the less command. Instead, it may be interpreted as a character input or execute a different function, but it does not terminate the less viewer.
C) e
The 'e' key does not serve as a command to exit less. It could potentially be used for other operations within the command but is not associated with exiting.
D) q
Pressing the 'q' key is the proper way to exit less. This command is explicitly designed for quitting the viewer, making it the correct response.
E) !
The '!' key does not function to exit the less command. While it may have other uses in certain contexts, it is not relevant for exiting.
Conclusion
The key 'q' is definitively the correct choice for exiting less, as it is explicitly designed for that purpose. All other options fail to fulfill this function, either performing unrelated actions or being ineffective in terminating the less viewer.