I believe A is the correct answer
Answer: A). People can have a big impact on others' lives without realizing it.
Explanation: The other options seem worthy as well but this one is the appropriate choice.
The last one is uses capitalization correctly. “According to my grandmother, Hungarian is the second hardest language to learn.”
True. end notes are placed at the end of an essay on a separate page
I think you mean Interior. Interior means something that is within; inside.
A sentence example would be: He observed the mansion's interior with awe.
I hope this helped.
Thank you,
Otaku