Check out example codes for "options in html". It will help you in understanding the concepts better.

Code Example 1

<form id="form">
            <label for=""></label>
            <br>
            <input type="" id="">
            <br>
            <label for=""></label>
            <br>
            <input list="browsers" name="Thenicknamey" id="Thenickname">
            <datalist id="browsers">
                <option value=""></option>
                <option value=""></option>
                <option value=""></option>
            </datalist>
            <br>
            <label for=""></label>
            <br>
            <input type="" id="">
            <br>
            <input type="" id="">
        </form>

Code Example 2

<!-- C'est la deuxième valeur -->
<!-- qui sera initialement sélectionnée -->
<select id="monselect">
  <option value="valeur1">Valeur 1</option> 
  <option value="valeur2" selected>Valeur 2</option>
  <option value="valeur3">Valeur 3</option>
</select>

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