The correct answer is: Emma is older than Alice, while Jolie is the oldest.
The word “than” is used to compare two things. In this case, Emma is being compared to Alice. The word “the” is used to refer to a specific person or thing. In this case, Jolie is being referred to as the oldest person in the group.
The other options are incorrect because they do not make sense in the context of the sentence. The word “then” is used to indicate a sequence of events. In this case, it would not make sense to say that Emma is older then Alice. The word “from” is used to indicate a starting point. In this case, it would not make sense to say that Emma is older from Alice. The word “an” is used to refer to a singular, indefinite noun. In this case, it would not make sense to say that Emma is older an Alice.