Pl help due midnight Read the passage.

In real life, making a robot that performs even a simple task is tricky. Researchers have to build a robot that's right for the task. They also have to program the robot to move and react in the right way. They write the instructions in code. The robot's computer reads the code and tells the robot what to do.

–"BigDog on the Move"

What topic do the descriptive details in the passage describe?

how much time it takes to make a robot

how easy it is to make a robot

how difficult it is to make a robot

how much fun it is to make a robot

When employing the core learning system, reading text books and attending class are important ways to knowledge.

According to ohrp, a problem is an “unanticipated problem” when it meets which of the following criteria: unexpected, related or possibly related to the research, suggests that the research does not put the subjects or others at greater riskunexpected, related or possible related to the research, suggests the research puts subjects or others at greater riskunexpected, unrelated to the research but still occurring with a subject, suggests the research puts others at greater riskexpected, related or possible related to the research, suggests the research puts others at greater risk

Chen's research team randomly assigned some newborns and their mothers either to a breastfeeding promotion group (where breastfeeding was encouraged, but not required) or to a normal pediatric care group (where breastfeeding was neither encouraged nor discouraged). which research method did they use?