Answer:
The lawyer's statement means Heidi's lawsuit is frivolous.
Step-by-step explanation:
Precedents in the courts of law are previously established cases whose judgements can be referenced in successive case. In the case above, Linda is the defendant because the burden of proof lies on her. She needs to put up a defense to contest the accuracy of her lawsuit.
When the lawyer tells her that precedent supports her defense, it means that previously established cases on that matter support Linda's case. Therefore, Heidi's lawsuit against Linda was frivolous and lacked merit. Linda has a high chance of winning the case.