England will qualify for the semi-finals as group winners if they beat West Indies in their final match.
If England lose, then they, West Indies and South Africa will all finish on six points and net run-rate will determine which two sides advance.
England have put themselves in a strong position to qualify even if they are beaten on Tuesday after boosting their net run-rate above that of West Indies and South Africa in a 10-wicket win over Scotland.
However, Heather Knight’s side will want to avoid going through as runners-up as that would probably mean facing defending champions Australia in the semi-finals.
South Africa will go through if England beat West Indies or if England suffer a big defeat that drops their net run-rate below +1.382.
West Indies need to beat England to qualify and any margin of victory will almost certainly be enough given their net run-rate advantage over South Africa.
Bangladesh and Scotland have already been eliminated.