Which of the following sentences contains at least one error?

a$.$ The role of the business analyst is key in software development projects, especially at the inception of the project.

b$.$ Creating a manual requires a dedicated effort from the senior management through all the employees of the business.

c$.$ A business analyst is someone who analyzes the organization and design of systems, including businesses, departments,

and organizations.

d$.$ A company's operating manual contains all the policys and procedures that make up the way a business carries out its

business functions.

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