The answer is definitely C: Blogs.
Blog is somewhat very similar to a website. It is sort of a journal that is mostly maintained by one person, the blogger. They are updated regularly and can contain information related to a specific topic. In most cases, blogs are used as dairy diaries about politics, people’s personal lives, or social commentaries. They give you, as a blogger, opportunities to interact with your visitors while promoting your products.
Answer:
Correct answer is option B (The reason for using supertypes is to minimize the number of nulls and to minimize the likelihood of redundant relationships)
Explanation:
Entity supertype
A entity supertype is a generic entity type which is related with one or more subtypes.
Use of entity supertype:
The reason for using entity supertype is to reduce redundant relationships and it is also used to minimize the number of nulls.
-31 or 21- 50 it may also carry -31
