The correct answer to the question “What’s the biggest challenge for most businesses when going online” is option (b). Developing a plan. Because planning a budget, optimizing a website, or even defining a customer base, is not a challenging task for most businesses which you could do if you have the necessary datasets. But developing a plan is for sure a challenging task in itself. Are you interested in learning more about Digital Marketing? If so, check out Digital Marketing course from Intellipaat, which will help you in becoming a certified Digital Marketer. Also, take a look at the following video on Digital Marketing Courses for Beginners to get a better idea.