Which choice best describes the overall structure of the text?

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Mahmoud Reza Hemami and colleagues showed that high moonlight intensity inhibits the activity of the Iranian jerboa (Allactaga firouzi), a result explicable in terms of benefits and costs: greater lunar intensity may not enable the jerboas to increase foraging success enough to offset the higher chance of detection by predatory jackals or owls. Most other nocturnal mammals respond to lunar intensity variations similarly to Iranian jerboas, but Azara's night monkeys (Aotus azarae) display the opposite pattern, as their heavy reliance on visual foraging results in a different balance of reward and risk.

It introduces an observation of a behavioral pattern, presents an explanation for the pattern, and then describes an exception to the pattern that casts doubt on that explanation.

It discusses two different responses to the same natural phenomenon, explains why one of those responses occurs, and then suggests that the other response still needs to be explained.

It presents and explains a study result, indicates that the result is similar to the results of many other studies, and then attributes a conflicting study result to a difference in that study's methods.

It describes and accounts for a finding, characterizes the finding as representative of a general pattern, and then describes and accounts for an exception to that pattern.