Although I’m not an expert in the field but I’ve managed to write a script for you that will do the work, Hope you will find it useful.
<!DOCTYPE html>
<html>
	<head>
		<title>Poll with Comment</title>
	</head>
	<body>
		<h2> Basic Form </h2>
				
<?php
			
		if ($_SERVER['REQUEST_METHOD'] == 'POST' &&
		isset($_POST['SbtQues']) &&	!empty($_POST['Question'])
		// Remove the '//' from the line below to make Comments Compulsory.
		// && !empty($_POST['comments'])
		){
			
			$host = 'localhost'; // Change localhost according to your needs.
			$user = 'abc'; // Change abc to your Database username.
			$pass = 'xyz'; // Change xyz to your Database username name's passowrd.
			$db = 'database'; // Change database to a database you want to store information.
			$conn = @mysqli_connect($host, $user, $pass, $db);
			if(!$conn) { die("Connection Failed");	}
				$question = $_POST['Question'];
				$comments = $_POST['comments'];
				$table = 'question'; // Change the word question to a table in which you want to save the information.
			$query = "INSERT INTO 
						{$table}  
					VALUES(
							'{$question}',
							'{$comments}'
							)";
			
			$results = mysqli_query($conn, $query);
			if (!$results){ die("Cant Insert the Record");	}
			else { echo "Thank You! Your Answer is Submitted."; }
		} 
		else 
		{ 
?>	
		<p> Your Question Here </p>
		<form method="post" action="">
			<p>
				<input type="radio" name="Question" value="Value1">Value1
			</p>
			
			<p>
				<input type="radio" name="Question" value="Value2">Value2
			</p>
			
			<p>
				<input type="radio" name="Question" value="Value3">Value3
			</p>
			
			<p>
				<input type="radio" name="Question" value="Value4">Value4
			</p>
			<p>
				<input type="radio" name="Question" value="Value5">Value5
			</p>
			<p>	
				<label for="comments">Insert Your Comments Here (Optional)</label> <br />
				<textarea name="comments" id="comments"	rows="4" cols="50"></textarea>
			</p>
			<p><input type="submit" name="SbtQues" value="Submit Your Answer"></p>
		</form>
<?php
		}
?>
	</body>
</html>