Number of Function Keys in a Keyboard

Introduction:
Function keys are a set of keys on a computer keyboard that have special functions assigned to them. These keys are usually located at the top row of the keyboard, numbered as F1, F2, F3, and so on. Each key can perform a specific function when pressed, depending on the software or operating system being used.

Explanation:
The number of function keys in a keyboard can vary depending on the type and design of the keyboard. However, the most common number of function keys found on a standard keyboard is 12.

Identifying the Correct Answer:
Let's analyze the given options to determine the correct answer.

a) 14 - This option suggests that there are 14 function keys on a keyboard. However, this is not the standard number of function keys and is not correct.

b) 12 - This option suggests that there are 12 function keys on a keyboard. This is the most commonly accepted number of function keys on a standard keyboard, making it the correct answer.

c) 13 - This option suggests that there are 13 function keys on a keyboard. This is not the standard number of function keys and is not correct.

d) 11 - This option suggests that there are 11 function keys on a keyboard. This is not the standard number of function keys and is not correct.

e) 15 - This option suggests that there are 15 function keys on a keyboard. This is not the standard number of function keys and is not correct.

Conclusion:
The correct answer is option 'b', which states that there are 12 function keys on a keyboard. These keys are labeled as F1, F2, F3, and so on, and perform various functions depending on the software or operating system being used.