The correct spelling “secretarial” refers to anything related to the work or duties of a secretary. It is derived from the word “secretary”, which comes from the Latin term secretarius, meaning a person entrusted with secrets or confidential work. This adjective form is commonly used in administrative and official contexts.

Information related to the correct answer:

• The word secretarial is spelled with ‘sec’ at the beginning and ‘tarial’ at the end.

• It means pertaining to secretaries or their work, such as in the phrase secretarial skills or secretarial duties.

• The suffix ‘-ial’ is often added to nouns to form adjectives, meaning “related to” or “characteristic of.”

• Common usage: She took a secretarial course before joining the office.

• The correct pronunciation is /ˌsiː.krɪˈteə.ri.əl/ in British English and /ˌsiː.krəˈtɛr.i.əl/ in American English.

Explanation of incorrect options:

• sacretarial: Incorrect because the prefix “sac-” is wrong; the correct root is “sec-” from “secret.”

• secretareal: Incorrect spelling; the ending “-eal” is not used in this adjective form.

• secretariel: Wrong because the ending “-iel” is not a valid suffix for forming adjectives from nouns like “secretary.”

Thus, “secretarial” is the only correct spelling, accurately representing the adjective form of secretary used in formal and professional English.