To answer this question, we need to understand the correct spelling of the given word, which is "trolley".
Let's go through each option to understand why it is correct or incorrect:
Option A) Trolley - This option is correct, as it matches the correct spelling of the word.
Option B) Trolly - This option is incorrect because it is missing the letter "e" at the end.
Option C) Trolie - This option is incorrect because it is missing the letter "y" at the end and has an extra "i" in the middle.
Option D) Troley - This option is incorrect because it is missing the letter "l" in the middle.
The correct answer is A) Trolley. This option is correct because it matches the correct spelling of the word.