2. PART B: Which detail from the text best supports the answer to Part A?
OA "A century ago, after five months and more
than 9.000 experiments, famed inventor
Thomas Edison still wasn't able to make a
new type of storage battery work,
according to a 1910 authorized biography."
(Paragraph 5)
B "If you're engaged in a hard problem,
you're developing an attitude that failure is
okay, says Walker. Accepting failure helps
you learn'" ( Paragraph 9)
OC "As Walker suggests, the technique often
goes hand-in-hand with inquiry-based
learning. Students often teach and mentor
one another." ( Paragraph 14)
OD "Arelated approach is also seeping into K
12 math education. Common Core is a set
of educational standards that 43 states and
the District of Columbia have adopted."
Paragraph 20)