Do you know Laravel Blade?

Question #1	What is Blade syntax to show a variable, avoiding error if the variable is not defined? (and then showing empty string)
Options	{{ $var('') }} {{ $var or '' }} {!! $var !!} {{ $var | '' }}

Question #2	Look at the code snippet. What's behind XXXXXX?
Code snippet	@can('update', $post) The Current User Can Update The Post @XXXXXX
Options	end can endif endcan

Question #3	Look at the code snippet. What is missing under XXXXX?
Code snippet	@foreach ($users as $user) @if ($XXXXX->first) This is the first iteration. @endif @endforeach
Options	array index loop users

Question #4	Look at the code snippet. Those two blocks will perform an identical check/action. What's behind XXXXXX?
Code snippet	@if (!Auth::check()) Please log in. @endif @XXXXXX (Auth::check()) Please log in. @endXXXXXX
Options	unless while ifnot notif

Question #5	Look at code snippet. What would be displayed?
Code snippet	Controller code: $name = '<strong>Taylor</strong>'; return view('welcome', compact('name')); welcome.blade.php code: {!! $name !!}
Options	Taylor It would throw an error <strong>Taylor</strong> Empty string

Question #6	See code snippet. What's the word behind XXXXXXXX?
Code snippet	@XXXXXXXX ($users as $user) This is user {{ $user->id }} @empty No users found. @endXXXXXXXX
Options	foreach forelse if while

Question #7	If main Blade template contains @yield('content') then what command should be included to view this 'content' in "child" Blade template?
Options	@can('content') @start('content') @extends('content') @section('content')