Serial Object not processing Arduino UNO R3 port information

I am on a MacOS Pro with a USBC connector. Currently when I "print" to only the serial object i recieve 3 ports:

port a : wlan debug

port b : Bluetooth-incomingport

port c : usbcmodem1101

However I need port c, which is connected to my arduino board. When I've switched to the patching below it refuses to print any data. Is there a solution to this?

Here is the information I am trying to process as a stream of 4 sensor values from ardiuno :

 const int NUM_SENSORS = 4; // e.g., 3 flex sensors, 1 softpot
int sensorPins[NUM_SENSORS] = {A0, A1, A2, A3};

void setup() {
  Serial.begin(9600); // Keep it standard, or 115200 if you notice lag
}

void loop() {
  for (int i = 0; i < NUM_SENSORS; i++) {
    int value = analogRead(sensorPins[i]);
    Serial.print(value);
    if (i < NUM_SENSORS - 1) {
      Serial.print(" "); // Space-separated values for Max MSP
    }
  }
  Serial.println(); // Newline acts as a carriage return for Max
  delay(20); // ~50Hz refresh rate—plenty fast for hand gestures
}