<u>Answer:</u>
<em>The below displays subjects with its associated books. This we would display using <UL>
</em>
<em>English
</em>
<em>Coursebook
</em>
<em>Workbook
</em>
<em>Mathematics
</em>
<em>Lab manual
</em>
<em>Course book
</em>
<em>Science
</em>
<em>Scrap book
</em>
<em>Course book
</em>
<em> <UL>
</em>
<em> <LI>English
</em>
<em> <UL>
</em>
<em> <LI>Course book</LI>
</em>
<em> <LI>Workbook</LI>
</em>
<em> </UL>
</em>
<em> </LI>
</em>
<em> <LI>Maths
</em>
<em> <UL>
</em>
<em> <LI>Lab manual</LI>
</em>
<em> <LI>Course book</LI>
</em>
<em> </UL>
</em>
<em> </LI>
</em>
<em><LI>Science
</em>
<em> <UL>
</em>
<em> <LI>Scrap book</LI>
</em>
<em> <LI>Course book</LI>
</em>
<em> </UL>
</em>
<em> </LI>
</em>
<em></UL>
</em>
Here <em><UL> tag creates un ordered list and one another <UL> tag inside <LI> created nested list.</em> <em>This is how a nested unordered lists needs to be created.
</em>