The recent discovery of a carved wooden figure dating to around 2,000 years ago in a

Choice C is the best answer because it most logically completes the text’s discussion of the discovery of a carved wooden figure dating to around 2,000 years ago. In this context, “rarely” means infrequently. The text states that the discovery of the figure was “truly surprising” and notes that wooden objects are highly prone to rot. This context conveys the idea that wooden objects infrequently survive for as long as the carved figure has survived.

Choice A is incorrect because “sturdily” means strongly, which wouldn’t make sense in context. If wooden objects in general could strongly survive for long periods of time, then the discovery of a wooden figure that’s around 2,000 years old wouldn’t be surprising. Choice B is incorrect because “carelessly” means accidentally. The text conveys the idea that wooden objects in general don’t survive for very long because they rot, not that wooden objects in general accidentally survive despite this. Choice D is incorrect because the text conveys the idea that wooden objects in general don’t survive for very long because they rot, not that wooden objects in general “simply,” or merely, survive for long periods of time. If wooden objects in general could merely survive for as long as the figure has survived, then the discovery of the figure wouldn’t have been surprising.