Biologist: In Region X, the average horn mass and body length of adult bighorn sheep has dropped over the past several decades. The cause is probably regulations prohibiting hunting of smaller animals. These regulations have undoubtedly given smaller sheep an advantage in surviving to a reproductive age. Therefore, genes for smaller adult size most likely have spread through the population.
The two sections in boldface play which of the following roles in the biologist’s argument?
A The first is the main conclusion; the second is an observation for which a causal explanation is presented.
B The first is a premise supporting the second; the second is the main conclusion, but not the only conclusion.
C The first describes a phenomenon for which the main conclusion presents an explanation; the second is a subsidiary conclusion supporting the main conclusion.
D The first is a subsidiary conclusion that supports the main conclusion; the second is a premise that independently supports the main conclusion.
E The first suggests a causal explanation for a phenomenon described by the main conclusion; the second provides further evidence to support that explanation.
BF1- In Region X, the average horn mass and body length of adult bighorn sheep has dropped over the past several decades. BF2- genes for smaller adult size most likely have spread through the population. Can anyone ans this Q abve and also give the solution?