Answer:
<!DOCTYPE html>
<html lang="en">
<head>
<!--title for web page -->
<title>Question 1</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>
<!-- Creation of selection list -->
<select name="orderDay">
<!-- Creation of Weekday option group-->
<optgroup label="Weekday">Weekday</optgroup>
<option value="MON">MON</option>
<option value="TUE">TUE</option>
<option value="WED">WED</option>
<option value="THU">THU</option>
<option value="FRI">FRI</option>
<!-- Creation of Weekend option group-->
<optgroup label="Weekend">Weekend</optgroup>
<option value="SAT">SAT</option>
<option value="SUN">SUN</option>
</select>
</body>
</html>
Step-by-step explanation:
The above code can be saved as orderDay.html. When it is clicked open it opens into a browser where we have an output which is a dropdown box showing the days under the weekday group and the days under the weekend opton group.