What is Chu's central idea regarding the United States' role in the global clean energy race? A
The U. S. should work harder to compete in the development of clean energy
technologies.
B
The U. S. missed the explosion in the solar technology market.
C
The U. S. is no longer an innovator of clean energy technologies.
D
The U. S. must develop the capability to manufacture the energy products it invents.

The correct answer is A. The U.S. should work harder to compete in the development of clean energy technologies.

Explanation:

Chu says that there are still so many things that the US can do in order to be one of the main participants in creating clean energy technologies. There is still a long way before they can be on par with some other competitors in this field and she feels is US's duty being such an important country in the world to do more about this issue.

the answer is b i think

laughter and happiness are an essential part of life. laughing releases the body's "feel good" chemicals. thus, it provides long or short term relief from stress and or anxiety. more or less, laughing strengthens social connections and provides an easy approach in social related situations.

moreover, there are many benefits of laughter and humor. it's as if they play the role of superhero to combat anxiety and depression, according to researchers. happiness and laughter is the best medicine for teen mental health.

what happens in the body also affects the mind. the positive changes in physical health also have profound an impact on mental health. we have a lot to gain from laughing! medical effects of laughter have continued to validate the pain-relieving effect and benefits of laughter.

scientists tell us that laughter and humor actually, believe it or not, lower blood pressure, reduce stress hormones and increase muscle flexion. there are many benefits to happiness and laughter, and they so happen to increase the circulation of antibodies in the blood stream and make us resistant to infections.

as stated before, laughing releases your body's "feel good" chemicals, and on a related note, negative stress can cause your body to release chemicals that weaken your immune system which makes you more likely to contract a disease. luckily, laughter reduces negative stress and prevents those chemicals from being released.

all in all, you may want to consider laughing as much as you can!