Answer: A. a downward-sloping labor demand curve.
Explanation:
If the marginal product of labor is diminishing then that means that for every extra worker hired, less products are made than the last worker. As a result of this, companies will not want to pay high wages to workers because they would be bringing in less revenue when hired. 
This will cause a downward-sloping labor demand curve that shows that as more workers are hired, the company would like to pay less wages because each new worker is only producing less than the last worker. 
 
        
             
        
        
        
VAT added to the products price at the stage of sale.
Answer: Option B
<u>Explanation:</u>
VAT stands for value added tax. VAT system is like a GST. The VAT has to be paid by the consumer or a business concern must pay the cost of goods and services and has to be subtracted material cost of previous year if any. 
At the exact and each time value is added when a sale is made. Each and every seller in the production chain as to be charges VAT tax to the buyer, which it's remitted to the government.
 
        
             
        
        
        
Answer:
Since there is not enough room here, I prepared an excel spreadsheet
Explanation:
 
        
             
        
        
        
Answer:
Unearned Fees ($3,600 × 6 months ÷ 12 months) $1,800
        To Advertising revenue $1,800
(Being the adjusting entry is recorded)
Explanation:
The adjusting entry is shown below;
Unearned Fees ($3,600 × 6 months ÷ 12 months) $1,800
        To Advertising revenue $1,800
(Being the adjusting entry is recorded)
Here we debited the unearned fees as it decreased the liability and credited the advertising revenue as it increased the revenue account 
The six months could be computed from June 1 to December 31