Final answer:
The presence of small yellow needles in the sediment of a urine sample with a pH of 6.0 indicates the presence of crystals. Cholesterol crystals can be ruled out.
Step-by-step explanation:
The presence of small yellow needles in the sediment of a urine sample with a pH of 6.0 indicates the presence of crystals. In this case, out of the given options, cholesterol crystals can be ruled out.