In a group discussion, which sentence is most clearly challenging the
credibility of a source?
o
a. when gutierrez refers to qubits, she's talking about the
field of quantum computing.
o
b. the purpose of gutierrez's article is to make a point, not to
teach a lesson about something technical.
o
c. i disagree with gutierrez completely that quantum
computers will be faster than current computers.
o
d. gutierrez's article is way too old to say anything relevant
about computer science today.

a is the answer

explanation:

recent brain research has shown some surprising benefits as a result of formal musical training. learning to play a musical instrument appears to develop parts of the brain that can even influence academic results. the studies indicate that the earlier a child begins training, the more benefits there are. one such study showed that children who began musical studies before the age of seven had a more developed brain in the region where language production and auditory processing take place. scientists believe there is mounting evidence to show that early musical training can improve brain function.

explanation: