Final answer:
In the sentence 'The book was published in the 1990s, after the author died', the words that indicate con are 'published', '1990s', 'after', and 'died'.
Step-by-step explanation:
The words in the sentence "The book was published in the 1990s, after the author died." that indicate con are published, 1990s, after, and died. These words suggest a sequence of events and a relationship between the timing of the publication and the author's death. Therefore, the correct answer is b) published, 1990s, after, died.