Answer:
Press Ctrl+H to access the Find and Replace dialog box.
Step-by-step explanation:
Using just the find option/dialog box will result in Jack having to remove the space at every reference to his Company.
Using the Find and Replace option he will be able to Find "Company ABC, LLC" and replace it with "CompanyABC, LLC". Then selecting "Replace all" will automatically fix the problem at every reference to his Company.