$7.$Dion, a U$.$S$.$ citizen, is the co$-$owner of Eagle, Inc. Jake, the other partner, is concerned that Dion might be taking more than just his salary from the business and hires an investigator. One morning, the investigator comes to Dion's office and asks to see the books. Dion feels that this interferes with his Constitutional rights. The Bill of Rights would protect Dion against whose actions?

a$.$the investigator.

b$.$the partner.

c$.$the police.

d$.$all of the above.