One criticism of programs aimed at enriching the educational experience of students who are gifted is that:

all students could benefit from an enriched educational experience.

Explanation:

The enriched educational experience or enriched learning environment is described as a process that aims at providing the student's brain with meaningful and positive reinforcement over an extended time-period which is ultimately responsible for strengthening "synaptic connections" as per the scientists. Investigation associated with a protein named Src is responsible for providing an insight into how an individual's brain is being enhanced via enrichment.

the answer is:

c. economic output

two jet streams that directly affect the formation of weather in the continental part are a polar jet and a subtropical jet. they are responsible for the transportation of weather systems, which directly affect people. the polar front is the boundary between cold air from the north pole and warmer equatorial air. both the polar jet and the subtropical jet blow from the west to the east, and follow the boundary between cold and warm air.

the strongest jet streams are polar jets, while subtropical jets are somewhat weaker.

the right answer is c. the polar jet stream is generaly stronger than the subtropical jet stream.