Which feature is essential for users to explore specific data in a read-only grid?

The feature that is essential for users to explore specific data in a read-only grid is filtering options. When data is presented in a read-only grid, users often need to narrow down the information they are viewing to make it more relevant to their needs. Filtering allows users to specify criteria to display only the rows that meet those criteria, making it easier to find specific data points without having to scroll through potentially large sets of data.

While row selection capability, zoom functionality, and column resizing can enhance the user experience, they do not fundamentally enable the exploration of specific data in the same way filtering does. Row selection might help users choose particular entries, but it doesn't help in narrowing down what is visible. Zoom functionality allows users to view data in more detail but doesn't assist in focusing the dataset being viewed. Column resizing can improve usability by allowing adjustments to data presentation but does not aid in data exploration directly. Thus, filtering options stand out as the critical feature for enabling users to efficiently explore specific data in a read-only grid.