Correct answer is 200.1234 as String {format: ".0#"} . Rest all options are not syntactically correct.

URI parameter (Path Param) is basically used to identify a specific resource or resources . For eg : the URL to get employee details on the basis of employeeID will be GET /employees/{employeeID} where employees is resource and {employeeID} is URI parameter. Hence option 1is the correct answer

Query parameters are a defined set of parameters attached to the end of a url. They are extensions of the URL that are used to help define specific content or actions based on the data being passed. To append query params to the end of a URL, a '?' Is added followed immediately by a query parameter.
To add multiple parameters, an '&' is added in between each.
Hence coming back to question, endpoint would return Patients with name as John and (and is very important here) surname as Bell

option 3 is the correct syntz to access application properties