Hello there. To solve this question, we have to remember some properties about radicals.
Given the following radical expression:
[tex]\sqrt{16\cdot4}[/tex]
We want to determine which is the option that is equal to it.
The first property we can use to determine the answer directly is:
[tex]\sqrt{a\cdot b}=\sqrt{a}\cdot\sqrt{b}[/tex]
Hence it is equal to
[tex]\sqrt{16\cdot4}=\sqrt{16}\cdot\sqrt{4}[/tex]
You can also notice that, calculating the value, none of the other answers will be correct since
