Question

having just published her tenth book, the popular author was at the pinncle of her career

◯ pinnical

◯ pennicle

◯ pinnacle

◯ no change is needed.

Explanation:

The sentence refers to the highest point of the author's career. The correct spelling for this meaning is "pinnacle". "Pinnical" and "pennicle" are incorrect spellings, and the original "pinicle" is misspelled.

Answer:

C. pinnacle