I agree. But the comment below makes sense in that AC C is really just like a "duh, of course there would be other materials". Thus, making D the next best weakening AC. Still very bad AC's though.

A: The answer talks about blossoms belonging to the rhododendrons and not the leaves.

B: This answer is not relevant to the argument.

C: Not relevant either.

D: Because of the height difference, the R flowers may have an air temp surrounding them that is higher than the temp of the C flower, which allows for a degree differential of more than 2 celsius. Therefore, determining a thermometer's accuracy based on the appearance of these two flowers side by side can yield incorrect results regarding the actual temperature.

E: What is a moderate temperature range? Which range are these flowers in? What is a warm or cold range? This answer choice forces us to make so many assumptions that it doesn't do much other than add another piece of support that can be easily disproved. It does nothing that says the premises cannot support the conclusion as it says nothing about the curling of the leaves or the blossoming of the petals of both flowers.

Hi Gen, I am interested as well. Feel free to message me!

This was very helpful thank you!

Felt this..

From a comment above I found useful: "Yes – took me months to figure that out. Consider “LEAST” to mean “must be false.” The ACS in MSS “LEAST” will either be consistent, irrelevant, or false. Consistent and irrelevant are still “compatible” since they don’t hurt or contradict the stimulus. You’re only left with “false.” Best of luck!"

7Sage keeping it real. Thanks!!!

Please count me in! I'm interested!