Answer:
Follows are the solution to this question:
Step-by-step explanation:
In point a:
If the applicant's parents provide written permission and are 16 years old or older.
Solution:
Logical term: 
Through parentheses or negation, deny the whole logical expression. e.g.

by using the rule of DeMorgan's:

The following logical expression is the English phrase:

In point b:
A parent of the applicant has submitted approved permission or the age of 18 years or older.
Logical expression:
through brackets or negation, refute the entire logical expression.

Apply DeMorgan's law:

by using the rule of DeMorgan's:
The following logical expression is the English phrase:
