They can, to some extent, under some circumstances; it's true.
But that doesn't necessarily make it the most appropriate answer to the question.
Bear in mind that these are actually multiple-response questions, not multiple-choice questions (two different things!): one isn't being asked to assess the comparative extent to which each different response is true, but to select the one that best encapsulates, in one sentence, an answer/completion to the stem question.
In this instance, my own feeling is that "Consumers spend more when they anticipate strong economic growth" was fairly clearly the one intended. It's supposed to relate to "feelgood factor"/"sentiment index", probably?
(These things are always a bit interpretative: having been taking exams intermittently for most of my life, I've never yet seen a complete set of MRQ's in which none of the answers was debatable! :33: ).