Multiple choice technology programming languages _tcscat(str1, str2) function in C++ is similar to this in C Sharp. strcat(str1,str2) str1.Append(str2) str1.CopyAtEnd(str2) str1=str1+str2 Reveal answer Fill a bubble to check yourself D Correct answer Explanation In C#, string concatenation is done using the + operator, so str1=str1+str2 appends str2 to str1. Unlike C's strcat() function, C# uses overloaded operators for string manipulation.