Simplify using the multiplication rule.

Answer:
The answer to your question is: first option
Step-by-step explanation:
[tex]\sqrt{3c^{2} d} \sqrt{6cd^{2} }[/tex]
[tex]\sqrt{3c^{2}d6cd^{2} }[/tex]
[tex]\sqrt{18c^{2}d^{2} cd }[/tex]
[tex]cd\sqrt{18cd}[/tex]
[tex]3cd\sqrt{2cd}[/tex]