Which of the following sentences from the article supports the idea that inventors not succeeding the first time is a good thing?

a
The ROV exercise wasn't a competition, but a self-test of each team's design and maneuvering ability.
b
"I thought we'd come to the pool and everything would work perfectly," said Vivian Kocsis, 12. "It didn't."
c
"A mistake is not the end of the world," said McDonald. "Fixing it builds confidence."
d
Students patiently tackled these problems on-site.

Based on your knowledge of industrialization, which of the following statements best describes what is happening in this photo taken in the us around 1910? a. the children pictured here likely worked a 4 - 6-hour shift after school, five days a week, for minimum wage. b. the children pictured here are working illegally, as child labor was prohibited in the late 1880s. the children pictured here likely worked a 12-hour day, six days a week, for about one dollar a week d. the children pictured here likely earned good wages, were protected from risk of injury, and were likely to have a successful, long-term career in this industry.