Add punctuation: Now it is necessary to unconvince businesses of there being a recession which will continue for the foreseeable future
A: Now it is necessary to unconvince businesses of there being a recession which will continue for the foreseeable future.

Add punctuation: Make use of Deleted File Recovery option to recover your deleted PDF files or use Lost File Recovery option to recover your lost PDF files
A: Make use of "Deleted File Recovery" option to recover your deleted PDF files or use "Lost File Recovery" option to recover your lost PDF files

Add punctuation: Of course Thales could have used these geometrical methods for solving practical problems having merely observed the properties and having no appreciation of what it means to prove a geometrical theorem
A:
Of course Thales could have used these geometrical methods for solving practical problems, having merely observed the properties and having no appreciation of what it means to prove a geometrical theorem.