"Reasonable efforts" is a phrase that means doing what is sensible and logical to achieve a particular goal. It implies making a reasonable attempt or doing everything that can be expected to achieve a desired outcome. Full definition
While reasonable effort has been made to maintain accurate information, the information shown on this site may vary, be out of date, or not applicable to you. (creditdonkey.com)
We will make commercially reasonable efforts to respond to Your request within 48 hours. (alison.com)
If the answer is yes, of course, you might be responsible to mitigate the defect, i.e. take reasonable efforts to minimize the danger. (jeffbrooketeam.com)