We know that
• p: She is a tennis champion.
,
• q: She is not very good.
It's important to know that the connector ⟹ refers to an implication so if we have the statement p⟹q it's read as "if p then q". The symbol ∼ refers to the negation of a statement, for example, if q means "she is not very good" then ∼q means "she is very good", so the symbol ∼ can be seen as the opposite meaning.
So, in this case, we have the statement p⟹∼q, which is read as "if she is a tennis champion then she is very good.
Therefore, the correct answer would be Her being a tennis champion implies that she is very good.