No <input type="radio" name="give-points" value="no"><br>
Yes <input type="radio" name="give-points" value="yes"><br>
<hr>
No Points <input type="radio" name="point-amount" value="0" checked=""><br>
Half points <input type="radio" name="point-amount" value="5"><br>
Full Points <input type="radio" name="point-amount" value="10" disabled=""><br>
This is the type that specifies this input as a radio button. MDN has the full list of input types if you're curious.
It belongs to the button group called give-points and ...
... it has the value of "no".
This radio input also belongs to the give-points group with the value of "yes".
This radio input and the ones following it belong to a different group called point-amount and ...
... it has the value of "0" ...
... and it is select by default when the form loads.
This radio button of the "point-amount" group is disabled and cannot be selected... Unless you use the inspector and remove this attribute.