I feel like b isn’t grammatically correct, so I’ll go with a.
Be sure to back them up with specified points.
1. They’ve been there and done that.You can learn from your mentor’s mistakes and avoid making them yourself.
2. You can talk to someone who is an unbiased third party. They see you for you. Your mentor may notice potential in you that you might not see in yourself. Better yet, they are not your boss so you don’t have to worry about things coming up in your review. And, they are not your parents so you can actually listen to them!
3. They have a whole different network of contacts and connections that you don’t. These connections are priceless and can help enhance your career in ways you couldn’t yourself.
4. It’s the best free service you could ever get. AND you’ll probably gain a life-long friend.
A comma splice or comma fault is the use of a comma to join two independent clauses.
For example: It is nearly half past five, we cannot reach town before dark.
The comma splice is sometimes used in literary writing to convey a particular mood of informality.
Another example: The sun is high, put on some sunblock.
