Both output and outputs is correct, although in American English the word output is used.
The plural of "she" is "they", so the plural of "she had" is "they had".
The plural of rose is roses. The plural possessive is roses'.
Knights is a plural. It is the plural for knight.
applied is does not have a plural but is apply it does have a plural.
The plural is a regular plural, attics.
The activity's goal was not evident. They were not able to define the purpose of the activity's output.
Output.
The plural of "she" is "they", so the plural of "she had" is "they had".
The plural of 'this' is 'these' and the plural of 'that' is 'those'.
Isthmi is plural. There are actually two plural forms. I will list them from singular to plural. Isthmus - Singular Isthmi - Plural Isthmuses - Plural
output
The plural of rose is roses. The plural possessive is roses'.
The plural form of can is cans.
Knights is a plural. It is the plural for knight.
applied is does not have a plural but is apply it does have a plural.
The plural is a regular plural, attics.
The plural of 'bunch' is bunches.The plural of 'ant' is ants.The plural of 'batch' is batches.The plural of 'day' is days.The plural of 'chimney' is chimneys.The plural of 'tomato' is tomatoes.The plural of 'umbrella' is umbrellas.The plural of 'donkey' is donkeys.The plural of 'sky' is skies.The plural of 'foot' is feet.The plural of 'show' is shows.