Hi,
You would need to edit your 'WAVT_CaptchaSecurityQuestion.php' file:
$elements = array();
$elements[] = array(0 => "ice",1 => "hot",2 => "cold",3 => "cold");
$elements[] = array(0 => "fire",1 => "hot",2 => "cold",3 => "hot");
$elements[] = array(0 => "snow",1 => "hot",2 => "cold",3 => "cold");
$elements[] = array(0 => "lava",1 => "hot",2 => "cold",3 => "hot");
$elements[] = array(0 => "a freezer",1 => "hot",2 => "cold",3 => "cold");
$elements[] = array(0 => "an oven",1 => "hot",2 => "cold",3 => "hot");
$elements[] = array(0 => "water",1 => "wet",2 => "dry",3 => "wet");
You would just remove the llines that you don't want.