The prosecutor doesn’t overlook this possibility. One of his premises states that he has “conclusively shown” when the robbery took place. This fact doesn’t necessarily rely on Klein’s memory at all, because it’s already been established.

This may be true, but it doesn’t affect whether there was enough light for Klein to be able to identify the perpetrator. The prosecutor doesn’t conclude that Klein correctly identified the perpetrator, just that there was enough light for him to make an identification.

Like (B), this may be true, but it doesn’t affect the conclusion. Even if Klein was too upset and didn’t make an identification at all, it wouldn’t impact whether there was enough light for him to be able to do so.

Dr. Yuge simply “acknowledged that the moon was full enough to provide considerable light before it set.” He never claims that the light was sufficient, only the prosecutor makes that claim.

Just because the nearly full moon provided considerable light doesn’t mean that light was sufficient for Klein to make an identification. Perhaps other factors interfered with the light, making it insufficient despite the nearly full moon.