&lt;?php$one = &quot;Hello&quot;;$two = &quot;World&quot;;echo &quot;$one$two&quot;;?&gt;
A. HelloWorld
B. $one$two
C. Hello
D. Error
Answer:A
&lt;?php$one = &quot;Hello&quot;;$two = &quot;World&quot;;echo &quot;$one$two&quot;;?&gt;
A. HelloWorld B. $one$two C. Hello D. Error
Explanation: Even though both the variables are inside the double-quotes, the value of the variable is substituted and then printed to the screen.