Is the Courses Taken table above in $1^{st}$ normal form? If not, what changes are needed to

convert it to $1NF?$

Is the Courses Taken table in $2^{nd}$ normal form? If not, describe the changes needed to

comply with the requirements for $2NF?$ Be specific.

Lastly, is the Courses Taken table in $3$NF$?$ If not, in addition to the changes you have

described in questions $1$&$2,$ what additional changes would be needed to assure

compliance with $3NF?$ Be specific.