The proper way to convert a string to all lowercase is:
A) STRING = string;
B) ToLower(string);
C) string.ToLower();
D) string.ToLower(string);

Question

Quizplus · Accepted Answer

The correct syntax for converting a string to all lowercase in C# is using the ToLower() method with no arguments, applied directly to the string object. Option C provides the correct syntax, while options A, B, and D either have incorrect syntax or are not necessary.

The Proper Way to Convert a String to All Lowercase