What he suspects about a person who drives a yellow car, is that perhaps the driver is the murderer of his wife, since she was killed by a person driving a yellow car, and is the car that Tom was driving.
After reading the excerpt represented above, I would say that the most appropriate word that coincides with tone of the text is <span>Demands. At first : there is a business term called false demands, which is commonly used in economics/international relationships. And if in actually brings the negative meaning it couldn't be Refusals, (obviously -statements also can't be used and the same with argument as it should be in another context).
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I personally think that would be amazing
