We are asked to pick the correctly spelled word from the options given.
The correct spelling is 'Reminiscences', which is the plural form of 'reminiscence' and refers to the act of recalling past experiences.
- Option 1, 'Reminiscences', is the correct spelling.
- Option 2, 'Reminiscenses', is an incorrect spelling.
- Option 3, 'Reminisnesses', is also incorrect and does not follow the typical English word formation rules.
- Option 4, 'Remenescenses', is an incorrect spelling.
Thus, the correct answer is \( \boxed{Reminiscences} \).