Cross-platform.
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Answer:
I know you're going to delete my answer... But I have an essay which needs to be completed online and I need to ask a urgent question!
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Explanation:
A primary key is a field that contains data unique to a record
Answer:b) The computer program that processes the data.
Explanation: In the computer system , process is the part of computer program which are responsible for performing of the processing of the data and other functions .The working of the process is associated with the program code and related activities/functions.
Other options that are mentioned in the question are incorrect because they don't describe the process correctly .Thus , the correct answer is option (b).