Loop through all possible options of a Dropdown-field
{% for option in entry.dropdownFieldHandle.options %}
    &lt;li&gt;{{ option }}&lt;/li&gt;
{% endfor %}


That should be it :)

{% for entry in craft.entries.section('sectionname') %}
  {% for option in entry.dropdownFieldHandle.options %}
    &lt;li&gt;{{ option }}&lt;/li&gt;
  {% endfor %}
{% endfor %}


Use the above if it is only one page

{% set myArray = [] %}

{% for entry in craft.entries.section('sectionname') %}
  {% for option in entry.dropdownFieldHandle.options %}
        {% set value = option %}

        {% set myArray = myArray|merge([value]) %}
  {% endfor %}
{% endfor %}


And loop over that variable , better to load 1 variable as array if you need it over multiple pages. Just make sure all pages have access to this variable (or create a macro for it)