Answer:
b. contains no positive statements. 
 
        
             
        
        
        
Answer:
Pitch
Explanation:
Enrico has trouble differentiating between a tuba's sound and a piccolo's sound. Although a piccolo generates sound waves that are much briefer, quicker than a tuba, he has trouble tracking the variations in the pitch of such sounds.
For music, a note's pitch indicates the note's high or low. It is measured for physics in a Hertz unit. A note that vibrates at 261 Hz is induced by pulsing sound waves at 261 times per second.
 
        
             
        
        
        
Answer: False 
Explanation:
A dissenting opinion refers to an opinion in a legal case that's written by the judge(s) who disagree with the court's majority opinion that gives rise to its judgment.
It should be noted that a justice who agrees with the outcome of a case but doesn't agree with the reason that was proffered by other justices can issue a concurring opinion and not a dissenting opinion.
Therefore, the correct option is False.