Responsiveness is about the bid itself. The right form, signed, on time, with every blank filled and every required attachment.
Common failures are a missing bid bond, an addendum not acknowledged or a blank alternate. Conditions added to the bid form are another.
Make a checklist from the instructions to bidders. Have a second person check the bid against it before it goes out.
Owners can waive small errors in some cases, but do not count on it. The rules differ by owner and by state.