foundryvtt-reve-de-dragon/templates/partial-select-carac.html

<select name="carac" class="flex-grow" data-dtype="String">
  {{#select selectedCaracName}}
  {{#each carac as |caracitem key|}}
  <option value="{{key}}">{{caracitem.label}}</option>
  {{/each}}
  {{/select}}
</select>