Step 1
Simplify the expression.
[tex]\tan (x)(\tan ^2(x)\text{ +1)}[/tex]
Step 2
Find a trigonometric identity that can be used to simplify the expression in step 1
[tex]\tan ^2(x)+1=sec^2(x)[/tex]
Step 3
Get the final answer after substitution.
[tex]\tan (x)sec^2(x)[/tex]
Hence the right answer is option B
