The data model command allows you to run searches on data models that have been accelerated1. The syntax for using the data model command is | datamodel <model_name> <dataset_name> [search <search_string>]1. Therefore, option A is the correct way to use the data model command to search fields in the data model within the web dataset. Options B and C are incorrect because they do not follow the syntax for the data model command. Option D is incorrect because it does not use the data model command at all.