A <form action="{{route('blog.update',$blog[0]->id)}}" method="post">
@csrf
@method('PUT')
<textarea name="txtTitle" >
{{$blog[0]->title}}
</textarea>
<input type="submit" value="Update" />
</form>
B <form action="{{route('blog.update',$blog[0]->id)}}" method="post">
@csrf
@method('UPDATE')
<textarea name="txtTitle" >
{{$blog[0]->title}}
</textarea>
<input type="submit" value="Update" />
</form>
C <form action="{{route('blog.update',$blog[0]->id)}}" method="post">
@csrf
<textarea name="txtTitle" >
{{$blog[0]->title}}
</textarea>
<input type="submit" value="Update" />
</form>
D <form action="{{route('blog.update',$blog[0]->id)}}" method="post">
@csrf
@method('POST')
<textarea name="txtTitle" >
{{$blog[0]->title}}
</textarea>
<input type="submit" value="Update" />
</form>