You are right, but sometimes things may vary slightly :-)
See this question (from manhattan)
An economic recession can result from a lowering of
employment rates triggered by a drop in investment, which
causes people to cut consumer spending and starts a cycle of
layoffs leading back to even lower employment rates.
A. a lowering of employment rates triggered by a drop in
investment, which causes people to cut consumer spending
and start a cycle of layoffs leading back to even lower
employment rates.
B a lowering of employment rates triggered by dropping
investment, which causes people to cut consumer spending
and starts a cycle of layoffs leading back to even lower
employment rates.
C falling employment rates triggered by a drop in investment,
which cause cutbacks in consumer spending, starting a
cycle of layoffs that lead to even lower employment rates.
D falling employment rates that are triggered by a drop in
investment, causing people to cut consumer spending and
starting a cycle of layoffs that lead back to even lower
employment rates.
E falling employment rates that are triggered by a drop in
investment, causing cutbacks in consumer spending and
starting a cycle of layoffs leading to even lower employment
rates.
What is the OA for this...is it (B) π