My father studied about the Nile River with proessor Waleed D. Najaar at Smithtown University
The usage of at is the error
Explanation:
IN is for large spaces that can enclose (village, city, state, province, country, continent, mountain range, desert, zone, etc.)
ON is for surfaces.( street/avenue/road, most bodies of water, etc)
AT is for points ( We live at an address, at a certain point and at a certain person’s residence if just the possessive case is used to mean the residence.)
Examples:
1- I live in Belgrade.
2-They live on Mulberry Street
3-I live at 199 Main Street
Conclusion: AT is a tiny point, ON is bigger, and IN is big enough to surround you.
That Billy finally has a<u> gun</u> on him after the bombing that he didn’t have earlier in the war is ironic. Hence, the correct answer is option C. a gun.
<h3>What is an irony?</h3>
An irony is a state of affairs or an event that seems deliberately contrary to what one expects and is often wryly amusing as a result. An irony is also a literary device, originally used in Greek tragedy, through which the essence of a character's words or actions is clear to the audience or reader although unknown to the character.
Therefore, the fact that Billy finally has a gun on him after the bombing that he didn’t have earlier in the war is ironic for it was of no use anymore as at the time he has it.
learn more about irony: brainly.com/question/26138104
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A immediately relating supportive details and information to the audience