Answer:
Adhering to taxation rules, Ensuring consumer protection, Identifying limited market segments,  Managing consumer trust
Explanation:
E Business is a business having major or all of its transactions, on internet medium. Eg : E Commerce (Online shopping) businesses, Online educational courses businesses. 
Audio Podcasting & Video-Conferencing are not E Businesses challenges. As these are their expertise areas, being an online business. Also, the user flexibility they offer is inherent USP of online businesses. Similar is the case for content management systems. 
However, lacking physical existence in markets, face to face interaction with customers : They face challenges like - identifying limited market segments, consumer trust & consumer protection. Also, all their variant transactions (with different tax slabs) being online, the return policies - might make taxation rule adherance also a potential challenge for them.
 
        
             
        
        
        
Answer:
There is a lack of user control over publicity.
Explanation:
Publicity is the degree of awareness of a product, company or service. It is the movent of information from the source to the general public.
One of the weakness of publicity is the lack of control the user or source has over it. Once an information is given to the public they form a perception and spread it in a way that the original source cannot control.
The lack of control a user has over publicity can have adverse effects, for example when negative publicity is circulating in the market a company is operating, it can lead to loss of revenue.
 
        
             
        
        
        
Answer:
This took me a long time to figure out , but I'm pretty sure number 1 is 
D) Silk and Wool.
And number 2 is C) Northern Nigeria
Explanation: Hope that's right, sorry if not because for number 1 most of them could be the answer, and for number 2, three  of them could be the answer.