Most beach resorts have lifeguards positioned strategically to help those need assistance. ?? I have made a mistake when finding the incorrect word on the sentence below "Most beach resorts have lifeguards positioned strategically to help those need assistanc.". I thought it all about collocation between adverb and adjective, so I changed the sentence become "Most beach resorts have lifeguards strategically positioned to help those need assistance." Unfortunately, that was not about collocation.