Answer:The technique use in this study is referred to as a double blind
Explanation:
A double blind study is the one that both participants and experimenters or researchers are not made aware who is given a certain treatment.
In double blind researchers will not know if what they are receiving is part of the test itself as they interact with participants or they are receiving a placebo.
This process is useful to eliminate and avoid bias results.
For example, in the above text the effect of caffein on attention is being tested so the researchers will not know whether the drink given to them is actual for the test or just the placebo , they don't know who is in control of the experiment.
He wanted to find a shorter route to Asia but he found the St. Lawrence River instead.
Answer: engaged in undesirable treatment short of terminating him
Explanation: A supervisor subjecting his worker to undesirable treatment which can be overt or subtle, such as demotion, reduction in salary, reassignment, negative job actions etc. without outright termination is often humiliating, demoralizing and a basis for protests and revolts. Such an instance or situation is more likely to lead to lawsuits against the organisation known as a retaliation suit in protest against unfair treatment on an employee for engaging in activities that are legally protected (which forms the basis of retaliation lawsuit).