Answer:
d. Increasing the efficiency of accessing struct member variables.
Explanation:
In the programming language C and C++ there is a keyword i.e typedef that function is to provide a new name. It is to be used to develop an extra name for the other data type but it does not develop a new data type
Here the advantage of using typedef is as follows
1. It allows the data types for meeting the specifications of the system
2. The name would become shorter
3. Readable program
but it does not increase the efficiency
Hence, the last option is correct