1. X is an apple. X has a sour taste.
2. X is being smaller than 100.
X is being smaller than 21.
3. X is gambling in a legal casino.
X is 18 years old or above.
4. Aurora is a parent.
Aurora has a daughter-in-law.
5. Philip is a vegetarian.
Philip loves tofu.
Sample
Being a tall person.
Being a successful person.

Being a tall person is neither a necessary nor a sufficient condition for being a successful
person. A tall person is not necessarily a successful person. Also, a successful person can be a
short person.
Marking scheme:
Correctly determine the relationship between the members of the pair: 1%​

1. X is an apple is necessary condition for X has a sour taste. If X is an apple, then it should have a sour taste.

2. X is being smaller than 100 is a sufficient condition for X is being smaller than 21. If X < 21, then X <100

3. X is gambling in a legal casino is both a necessary and sufficient condition for X is 18 years old or above. It is a must for X to gamble when X is 18 years old. If X is not gambling, X is not 18 years old.

4. Aurora is a parent is a necessary condition for Aurora has a daughter-in-law. If Aurora is a parent, so that she can have a daughter-in-law.

5.  Philip is a vegetarian is sufficient for Philip loves tofu. If Philip doesn't love tofu, it is not enough for him to be a vegetarian.

Hope this help you.

c hydrophobia is the answer