Final answer:
Trend analysis is a technique used to predict future employment needs of a firm by studying its past employment levels, and the statement is true.
Step-by-step explanation:
Trend analysis is indeed used to study a firm's past employment levels to predict future needs, so the statement is A. True. This form of analysis helps businesses and organizations forecast their future needs by looking at historical data. For instance, by examining historical patterns of unemployment in the U.S., businesses can identify trends based on various factors, including demographics. Additionally, the Current Employment Statistics, being a survey of businesses, provides alternative estimates of employment across different sectors, which can be utilized in trend analysis.