Final answer:
Yes (option 1). Word chain machines can produce sentences with 'if' and 'then'.
Step-by-step explanation:
Word chain machines can definitely produce sentences with 'if' and 'then'. These machines are designed to generate sentences by connecting words together in a logical manner, and 'if-then' statements are a common structure in English grammar.
For example, a word chain machine can produce a sentence like: 'If it rains today, then we will stay indoors.'
So, the answer to your question is Yes.