Answer: b. They should know how data should be indexed and updated.
Step-by-step explanation:
The knowledge workers are those who have the basic knowledge in context of computer and information literacy.
There fore it is necessary in their part to know how the data is to be indexed and updated. For storage of data it is necessary to be indexed so that it could be retrieved later.
Option A is incorrect it is not necessary on their part to increase strategic dissonance.
Option C is incorrect as they should not restrict themselves to the use of informal information.
Option D is incorrect as they also need to collect external data in terms of information literacy.