Answer:
closing issues
Step-by-step explanation:
Closing issues are the issues and problems on whose decision and result have been figured out previously. In the given case, the issue which Alex has been facing is the closing issue. This is happening because Alex has already pitched his customer to buy the product for six months. At the same time, when his boss asked him to sell the product for a year, Alex is perplexed and reaches to have closing issues.