Answer:
mobile and interactive channels
Step-by-step explanation:
In simple words, digital marketing refers to the process under which a business entity advertise its brand or products using various digital medium. This style of marketing has dominate the market over the last few decades and has been continuously growing due to positive developments in technology.
It involves interacting with the existing and potential customs in mass in a very small time period using mobile phones, internet or television etc. Thus, from the above we can conclude that the correct option is D.