public function update_choice( $data ) {

		// If there's no ID, we'll add a new choice.
		if ( ! isset( $data['id'] ) ) {
			return $this->create_choice( $data );
		}

		// Get the question.
		$choice = $this->get_choice( $data['id'] );
		if ( ! $choice ) {
			return false;
		}

		$choice->update( $data )->save();

		// Return choice ID.
		return $choice->get( 'id' );

	}