Answer:

A standard keyboard typically contains around 104 keys. These keys are used for various functions such as typing letters, numbers, symbols, and performing special actions. Among these keys, there are two locks that are commonly found on keyboards - Caps Lock and Num Lock.

Caps Lock:
The Caps Lock key is used to toggle the capitalization of letters when typing. When the Caps Lock is turned on, all letters that are typed will appear in uppercase, regardless of whether the Shift key is pressed or not. This is useful when typing a long string of uppercase letters or when you want to emphasize certain words or sentences.

Num Lock:
The Num Lock key is used to toggle the functionality of the numeric keypad. When the Num Lock is turned on, the keys on the numeric keypad function as numbers. This allows you to quickly input numerical data or perform calculations using the keypad. When the Num Lock is turned off, the keys on the numeric keypad function as navigation keys, such as Home, End, Page Up, Page Down, etc.

Char Lock:
The Char Lock mentioned in option (c) is not a lock that is available on a standard keyboard. This lock does not exist and is not a recognized term in relation to keyboard locks.

Both (A) and (B):
The correct answer to the question is option (d) - Both (A) and (B). This means that both the Caps Lock and Num Lock locks are available on a standard keyboard. These locks provide additional functionality and convenience when typing in uppercase or inputting numerical data.

Conclusion:
In summary, a standard keyboard contains around 104 keys. Among these keys, the Caps Lock and Num Lock locks are available. The Caps Lock is used to toggle the capitalization of letters, while the Num Lock is used to toggle the functionality of the numeric keypad. The Char Lock mentioned in option (c) is not a recognized term in relation to keyboard locks. Therefore, the correct answer is option (d) - Both (A) and (B).