I'm unable to locate/find xpath for the dropdown list in Selenium

I'm unable to locate/find xpath for the dropdown list in Selenium, Drop down is written with tag and an attribute(aria-activedescendant) value is changing on hover. As soon as the value selected in the dropdown the attribute(aria-activedescendant) value is disappearing.

Any can help me to find xpath for this? Thanks in Advance.

<div class="DropdownWidget---dropdown_value DropdownWidget---placeholder"
id="189d67819beda8ebc9b5a2b7554f80f1_value" 
role="listbox" 
tabindex="0" 
aria-controls="189d67819beda8ebc9b5a2b7554f80f1_list" 
aria-expanded="false" 
aria-activedescendant="" 
aria-labelledby="189d67819beda8ebc9b5a2b7554f80f1" 
aria-describedby="189d67819beda8ebc9b5a2b7554f80f1_selectedChoice" 
aria-required="true">
<!-- react-text: 38 -->- Please Select a Value -<!-- /react-text -->
<span id="189d67819beda8ebc9b5a2b7554f80f1_selectedChoice" 
class="DropdownWidget---accessibilityhidden">- Please Select a Value -</span> 
</div>

Value of the attribute is changing on mouse hover as below,
aria-activedescendant=189d67819beda8ebc9b5a2b7554f80f1_list_0
aria-activedescendant=189d67819beda8ebc9b5a2b7554f80f1_list_1
aria-activedescendant=189d67819beda8ebc9b5a2b7554f80f1_list_2
aria-activedescendant=189d67819beda8ebc9b5a2b7554f80f1_list_3