The use of 'bringing' in this context is clumsy.
Is "med" here obligatory? Is tar ... med a phrasal verb here?
Yes. take: ta med, følge, lede, føre.
There is also ta med seg (bring (along), take)
Thank you for the explanation!
is there something here denoting the gender of the guide? I put 'our guide is taking us with them to a beautiful park' but one of the suggested correct answers was the same except the guide was 'her.'
No, there isn't. That translation ("Our guide takes us with her..." I think) needs either him or her in English, so the Duolingo staff picked one arbitrarily.
but the neutral, singular they is accepted in standard English as correct.