how to get selected value of dropdown in reactive

I am trying to get the selected value of the dropdown on change event to be sent on reactive form submission. I have a very similar scenario working for radio based on the answer from how to get selected value of radio in reactive form

Here's the code for dropdown

<div class="row" *ngIf="question.controls.type.value === 'dropdown'">
   <div class="col-md-12">
    <div class="form-group__text select">
      <label for="type">{{ question.controls.label.value }}</label>
      <br><br>
      <select name="value" formArrayName="component" (change)="updateSelection(question.controls.component.controls, $event.target)">
        <option
          *ngFor="let answer of question.controls.component.controls; let j = index" [formGroupName]="j"
          [ngValue]="answer?.value?.value">
            {{answer?.value?.value}}
        </option>
      </select>
    </div>
  </div>
 </div>

I am not able to pass the answer as formcontrol to updateSelection on change of a selected option from the dropdown. Any help is greatly appreciated.

https://stackblitz.com/edit/angular-acdcac

Very similarily like previous question, we iterate the form controls in your array, initially set all as false, and then turn the chosen choice as true. So template let's pass $event.target.value:

<select name="value" formArrayName="component" 
   (change)="updateSelection(question.controls.component.controls, $event.target.value)">
    <option *ngFor="let answer of question.controls.component.controls; let j = index" [formGroupName]="j"
       [ngValue]="answer?.value?.value">
       {{answer?.value?.value}}
  </option>
</select>

And in the component we as mentioned iterate the form controls and set all as false. The value for $event.target.value will be the string value, for example Choice 1. We then search for the form control that has that value and then set the boolean for that particular formgroup:

updateSelection(formArr, answer) {
  formArr.forEach(x => {
    x.controls.selectedValue.setValue(false)
  })
  let ctrl = formArr.find(x => x.value.value === answer)
  ctrl.controls.selectedValue.setValue(true)
}

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