Final answer:
Translating a text from Chinese to English is characterized as a sequence-to-sequence problem where the input sequence of text is transformed into an output sequence in a different language.
Step-by-step explanation:
The task that can be seen as a sequence-to-sequence problem is d. Translating a text in Chinese to English. Sequence-to-sequence problems involve transforming an input sequence into an output sequence. In translation, the input sequence is the text in the source language, and the output is the corresponding text in the target language.