Which of the following represents the primary forms of ebusiness? (a) content providers, infomediaries, online marketplaces, portals, service providers, and transaction brokers.(b) b2b, b2c, c2c, and c2b.(c) advertising fees, license fees, subscription fees, transaction fees, and value-added service fees.(d) email, instant messaging, podcasting, content management systems, and video and web conferencing.

(B) B2B, B2C, C2C, and C2B.

Explanation:

Business to business B2B this is the ecommerce most profitable model, represent when a company brings services to another company.

Business to Consumer B2C, this model is the most commonly used model, it implies a transaction or buying process between a company and a person or consumer. Like a supermarket platform as an example.

Consumer to consumer C2C , are products or services provided by a consumer to another consumer, commonly the transaction is made through a virtual platform that will ask for a commission.

Finally consumer to business C2B, is when a consumer or person offers services to a company, a good example is when an influencer does advertisement for a company, in this case the influencer gets the income offering his services directly to a business.

i would say a penny hope it you