Fill in the blank with the correct option: Please write ......... ink. Don't use a pencil.

Question

Accepted Answer

The correct option is 1:

The correct option is 1:
The preposition "in" is the conventional and grammatically correct choice when referring to the specific substance or medium used for writing, such as ink, chalk, or paint, especially when the color or type of the medium is specified (e.g., "in blue ink," "in permanent marker"). When we use the word "ink" without specifying the instrument, English grammar treats "ink" as the surrounding fluid medium or container in which the writing exists. Think of the writing as being enclosed or immersed "in" the ink. This rule is a fundamental aspect of idiomatic English usage for documentation and instruction, differentiating the fluid medium from the writing tool. The sentence structure "Please write in ink" is an established idiom, where "in" conveys the state or form of the writing medium. The instruction to "Don't use a pencil" reinforces that the required method is a liquid medium, which necessitates the use of "in" to denote the content or material. Therefore, Option 1, "in," accurately completes the sentence according to standard English prepositional rules concerning writing media.

The incorrect option is 2:
"By" is incorrect because it is typically used to indicate the agent (the person doing the action) or the means of transportation (e.g., "The letter was written by the teacher") or a means of communication or method (e.g., "sent by email"). It does not correctly convey the medium or substance of the writing material.

The incorrect option is 3:
"With" is incorrect because it is reserved for the instrument or tool used to perform the action of writing. We would say, "Please write with a pen" or "Write with a pencil," where the pen or pencil is the object held in the hand. "Ink" is the substance or medium, not the instrument, making "with ink" grammatically unsuitable.

The incorrect option is 4:
"On" is incorrect as it is used to indicate the surface upon which the action of writing is performed (e.g., "Write on the paper" or "Write on the board"). It refers to location or contact with a surface, not the fluid or substance used to mark the surface.