A word has been given in the question and has been used in the sentences given below. Identify the statements where the word has been used in a contextually and grammatically correct manner. If the word has been used incorrectly in all the statements, mark option “None of these” , as your answer.

State
(I) The witness was asked to state the events leading up to the murder-incident to provide a clear account of what happened.
(II) The teacher asked the student to state the answer to the math problem on the board
(III) The musician attempted to state his guitar to create a melodious tune, but the instrument needed tuning badly.

The correct answer is only (I).

Let us analyze the contextual and grammatical usage of the word "State" (used here as a verb) in each statement:

1. Statement (I): "The witness was asked to state the events leading up to the murder-incident to provide a clear account of what happened."
In this context, "state" is used correctly as a verb meaning to declare, express, or present details in speech or writing. Providing an account of events fits this definition perfectly.

2. Statement (II): "The teacher asked the student to state the answer to the math problem on the board"
This statement is contextually incorrect. The verb "state" refers to expressing something verbally or in a formal written declaration. However, the action is directed to happen "on the board", which implies physical writing or drawing. One would "write", "solve", or "display" an answer on the board rather than "state" it.

3. Statement (III): "The musician attempted to state his guitar to create a melodious tune, but the instrument needed tuning badly."
This usage is completely incorrect. A musician would attempt to "tune", "play", or "string" a guitar. The word "state" makes no sense in relation to adjusting or playing a musical instrument.

Consequently, the word is used correctly in statement (I) only.