Whats the question????????
It would most likely be B or C since they are the same. Dashes basically show emphasis and if the sentence inside them is taken away, the other parts of the sentence are not affected. If we took the lion part out of your sentence, the sentence would still be talking about symbolism. However it more common to use parenthesis or commas to add emphasis but that's just stylistic choice
<span>the error of assuming that what is true of a member of a group is true for the group as a whole.so letter b may be a good choice</span>
The question lacks some context but I would say B) might be the right answer. Hope this helps!
C. an understood you, because usually you is the subject in the sentence, but it is understood without it.