I am not completely sure, but I think that standards of performance, or "performance goals", are used to measure productivity.
Answer: I will call you ‘as soon as’ possible before I go out for a walk
Explanation:
You cant put as soon as at the beginning because it won’t make sense
The best thesis statement would be:
A. Schools should encourage volunteering because it reduces stress, promotes personal growth, and has a positive effect on society.
This is the best because it provides the topic "Schools should encourage volunteering" and then it goes on to provide reasons for this that will most likely be described in the rest of the paper.
Hope this helps!
The answer which is an example of a theme with a dual nature is D. people who work hard learn values but may not prosper.
The other sentences are pretty linear and expected - a person works hard and is successful in life. D is somewhat different, which is why it has two natures, or a dual nature.