Who is ‘lucy’?
a. the archaeologist who discovered the earliest known primate
b. the earliest known human ancestor
c. the tallest known human ancestor
d. the first goddess of mesopotamia

the difference is that white collar worker performs skills like worker as a scientist or well blue collars do physical work and they do services like being a cook.

the answer is: must pay taxes on profits

since it is considered as a part of your income, profits from investments is eligible for tax payment.

the tax from your investment could be influenced by how long you decided to sell it. united states promotes keeping your investment for long term period. so, the tax rate for investments that you sell in less than one year is typically higher compared to investments that you sell in more than one year period.