This function removes the white spaces and other predefined characters from both sides of a string
select one:
a. strcmp()
b. ltrim()
c. trim()
d. rtrim()

trim()

Explanation:

trim() is predefined function which is used to remove white spaces and other predefined characters from both sides of the string.ltrim() and rtrim() also removes white spaces and predefined characters from the string but from left and right respectively.But trim() function removes from both ends.Hence we conclude the answer is trim().

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go tos official website.

click on your profile pic at the top right of the screen and click 'edit profile'.

click on "preferences" and press "year of birth".

and then just maybe try to reset whatever error made before by typing in the correct age details again. hope this !