It should be Rico's.
Well if her name is "Agne" then the apostrophe would go here "Agne's ". However, if her name is "Agnes" then the apostrophe would go here "Agnes' "
Yes if it will mean that Puerto Rico has a possession: Examples: Puerto Rico's flag Puerto Rico's population
Apostrophe in baker street
there is no apostrophe is yours unless a person's/object's name was "Your" and you are talking about something belonging to Your, in which case it would be Your's
Yes, you can use an apostrophe s to show possession even if the name ends in Z.
The correct placement of an apostrophe in "Vikas" would be "Vika's" to show possession or to indicate something belonging to Vikas.
An apostrophe is not required.
The apostrophe would go in the name "Ronald" when indicating possession as "Ronald's". For plural possessive, it would be "Ronalds' ".
It should be: Linda's Early Years
There is no apostrophe in "Sports Field"
Apostrophe.
No, unless your name has an apostrophe in it or you are using it in the possessive.