Final answer:
The correct word to use is 'were' because the subject is plural, composed of two elements: good language skills and strong attention to detail.
Step-by-step explanation:
In the sentence "Good language skills and strong attention to detail were two of the requirements for the position," the correct verb to use is 'were' because the subject of the sentence is plural, referring to two separate items: 'good language skills' and 'strong attention to detail.' Good communication skills, a key requirement listed in job ads, is similar in concept to 'good language skills' which is one of the qualifications stated in the original sentence. The necessity for precise communication is emphasized across various disciplines and professions, affirming the importance of strong language skills and attention to detail in the workplace.