Julian watches his grandfather repair watches. as julian matures he imitates what his grandfather does, and then his grandfather shows him more complicated techniques. eventually, julian is as proficient at repairing watches as his grandfather. this exemplifies
a. instinct
b. learning
c. reflex
d. stimulus

This exemplifies B. learning

Explanation:

Learning can be defined as a continuous process of acquiring information , knowledge and skills which changes our behaviour permanently.

Learning is not only a formal setting where we go to school to acquire information but we also learn through experience in which we practically get involved in doing things over time we become even better in doing those things.

As we push our self and get driven to get better at something we will give our all to learn it and as a result we may end up even becoming better than our teachers because we approach something new that we don't know with an empty mind and a drive to make sure that we master it ; this is what is happening with Julian.

i have to go with a for this one

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.