The readership of magazines in Sikkim is likely influenced by:

The correct answer is: d) All of the above

Magazine readership is influenced by a variety of factors, including interests and hobbies, income levels, and education.

• Interests and hobbies: People are more likely to read magazines that are related to their interests and hobbies. For example, someone who enjoys cooking is more likely to read a magazine about cooking than someone who does not enjoy cooking.
• Income levels: People with higher incomes are more likely to read magazines than people with lower incomes. This is because people with higher incomes have more disposable income to spend on magazines.
• Education: People with higher levels of education are more likely to read magazines than people with lower levels of education. This is because people with higher levels of education are more likely to be interested in reading and learning new things.

In addition to these factors, magazine readership can also be influenced by other factors such as age, gender, and location.