1. your 2. pen 3. here 4. is A. 2413 B. 2314 C. 3412 D. 3421

The correct answer is A. 2413.

The first option, 2413, is the only option that puts the word “your” first, followed by “pen”, “here”, and “is”. This is the correct order of the words in the sentence “Your pen is here.”

The second option, 2314, puts the word “pen” first, followed by “your”, “here”, and “is”. This is not the correct order of the words in the sentence “Your pen is here.”

The third option, 3412, puts the word “here” first, followed by “pen”, “your”, and “is”. This is not the correct order of the words in the sentence “Your pen is here.”

The fourth option, 3421, puts the word “is” first, followed by “pen”, “your”, and “here”. This is not the correct order of the words in the sentence “Your pen is here.”