&lt;?php$one = &quot;Hello&quot;;$two = &quot;World&quot;;echo &quot;$one&quot;+&quot;$two&quot;;?&gt;
A. HelloWorld
B. Hello+World
C. 0
D. Error
Answer:A
&lt;?php$one = &quot;Hello&quot;;$two = &quot;World&quot;;echo &quot;$one&quot;+&quot;$two&quot;;?&gt;
A. HelloWorld B. Hello+World C. 0 D. Error
Explanation: In an echo statement you can not use plus sign to join two strings.