Final answer:
The question requests selection of observed and expected frequencies for an item produced in a manufacturing plant, but lacks specific numerical data to provide an accurate response.
Step-by-step explanation:
The question appears to be a mathematics problem involving statistics, more specifically concerning frequency distributions and expected frequencies. However, the information given in the scenario does not provide clear data to calculate or identify observed and expected frequencies for Item 2 produced by Plant B. To determine observed frequencies, one would typically count the number of occurrences currently observed in the data set. Expected frequencies, on the other hand, are calculated based on a theoretical distribution or an assumption of equal probability across categories when no information is given about preferences or tendencies.