I believe the answer is: <span>claims about human behavior need to be supported with evidence
In scientific field, an evidence is important so other experts in similar field could review them and bring us closer to the truth.
But compared to other science fileds, Data from psychological research is much more likely to be in qualitative form rather than quantitative.</span>
The answer that will be best to complete the sentence is
that they are likely to be attracted to men who are affluent or mature enough
as this is the standards that most women look out for as these are the
characteristics that likely made them to be sexually attracted to.