Officially, Alex is not in the labor force.
Given that he is not actually employed (doesn't have an actual job), he cannot be considered part of the labor force. If he had some kind of job other than taking care of his children (even if it's a freelance job he can do from his home), then he would be in the labor force. However, this way, he is not and fall into the same category as unemployed students, for example.
The said friend will likely advise and persuade her best friend to do the thing that she does want. The friend will either support or oppose to the idea generated and confided to her by her best friend. Or this friend might advise and comfort her best friend because of the situation she's in. Laels' best friend might convince her to talk to Lael's husband for she and her husband might lack "communication". Convince means <span>to cause someone to believe something or to do something.</span>
Market and Trade
System
Specializing deals for the economics system
So they could find a quicker, safer, route to China to trade for spices and silk.
I believe it's B. If the price of automobiles falls, then more people will want to buy cars because they are cheaper, meaning the amount of car sales will go up.