Answer:
d. Make readers hungry for answers
Step-by-step explanation:
Lee Child wrote this interesting article in order to answer the same old question "How to create a suspense?".
According to him, the conclusion can be drawn from an analogy between creating a suspense and baking a cake.
Surely, for both of those things you need ingredients and they need to be adequately mixed, but the answer, Lee, suggests, is much simpler: the cake doesn't matter, all that matters is that your family members are hungry.
By using this analogy, he claims that successful suspense is created by making the readers/viewers constantly oblivious as to what will happen next. Anticipation will glue them to the book, making them flip the pages vigorously in search for answers and resolution.