A drop-down list is a graphical control element, similar to a list box, that allows the user to choose one value from a list.
When a drop-down list is inactive, it displays a single value.
When activated, it displays a list of values, from which the user may select one.
<h3>Why do we use drop-down?</h3>
Dropdowns do have their advantages.
Because they are standard widgets, users know how to deal with them.
When used in forms and for attribute selection, dropdown boxes prevent users from entering erroneous data, since they only show legal choices.
For more information about drop-down, refer to the link:-
brainly.com/question/842987
The poem is stating, to stop and see what you have, take stock, before you neglect or lose “it”.
“A bird in the hand is worth more than two in a bush”!
First paragraph states the main point