public void OnAnswerClicked(int choice)
    {
        selected = choice;
        Answer1.GetComponentInChildren <Image>().color = Color.white;
        Answer2.GetComponentInChildren <Image>().color = Color.white;
        Answer3.GetComponentInChildren <Image>().color = Color.white;
        Answer4.GetComponentInChildren <Image>().color = Color.white;

        if (selected > 0 && confidenceVal > 0)
        {
            NextButton.GetComponent <Button>().interactable = true;
        }

        switch (choice)
        {
        case 1:
            Answer1.GetComponentInChildren <Image>().color = Color.yellow;
            break;

        case 2:
            Answer2.GetComponentInChildren <Image>().color = Color.yellow;
            break;

        case 3:
            Answer3.GetComponentInChildren <Image>().color = Color.yellow;
            break;

        case 4:
            Answer4.GetComponentInChildren <Image>().color = Color.yellow;
            break;
        }

        LogHelper.AnswerChanged(true_question_id);
    }