Let's analyze the given program:

Code:

void setup() { 
    String my_str = "This is the sentence"; 
    Serial.begin(9600); 
    my_str.replace("sentence", "Arduino sketch"); 
    Serial.println(my_str);
}
void loop() { }

Explanation:

• The program defines a String variable my_str with the value "This is the sentence".
• It then calls the replace() function, which replaces the word "sentence" with "Arduino sketch".
• Finally, it prints the updated string using Serial.println().

Outcome:

• The word "sentence" is replaced by "Arduino sketch", so the resulting string will be:
  • "This is the Arduino sketch"

Correct Answer:

(C) “This is the Arduino Sketch”.