Final answer:
The task is to correct capitalization errors and identify proper adjectives in given sentences, also marking with an 'S' those adjectives that have not changed form from the proper noun.
Step-by-step explanation:
The task involves correcting capitalization, identifying and circling proper adjectives, and marking those proper adjectives which remain unchanged from the proper noun with an 'S'. Here's how the sentences should be marked:
Portuguese explorers were the first European travelers to reach the Australian region, but Spanish navigators were not far behind. (Circle European, Australian, Spanish and mark with S)
Thomas Abercrombie was a legendary National Geographic photographer who worked in the Arabian Desert, the Antarctic Continent, the entire Middle Eastern region, and the South Pole. He photographed Jacques Cousteau, the first Indian white tiger brought to the North American continent, and the Islamic pilgrimage to Mecca. (Circle National Geographic [no S as it's not strictly a proper adjective], Arabian, Antarctic, Middle Eastern, South (mark with S), Indian, North American, Islamic (mark with S))
The October Farmers' Market was a panorama of colorful leaves, Halloween costumes, pumpkins, and heirloom squash. The Blue Hubbard and Golden Hubbard varieties were my favorite. (Circle October, Blue Hubbard, Golden Hubbard [no S as they are types of squash and not strictly proper adjectives])