Solution:
Try to do like this
$news = DB::table('news')
->leftJoin('categories', 'categories.id', '=', 'news.category_id')
->select('news.*', 'categories.*')
->get();
->select(‘news.‘, ‘categories.‘) // To select all records from news and category
<form class="form-horizontal" action="/news/{{$news[0]->id}}" method="post" enctype="mulipart/form-data">
<select name="category_id">
<option> - </option>
@foreach($news as $news_data)
<option value="{{ $news_data->category_id }}" selected>{{ $news_data->category }}</option>
@endforeach
</select>
</form>