Which of the following is an example of a needs assessment?

Tony has decided to purchase a new combine.
Sally suggests a new disease-resistant seed to Richard.
Drew identifies the problems Stan is having with crop yield.
Raoul plans to purchase 50 pounds of “new and improved” fertilizer.

Just do the math, then think

The us is first  the  u.s. economy  remains the  largest in the world  in terms of nominal  gdp. however, the  u.s. economy  loses its spot as the number one  economy  to china when  measured  in terms of  gdp  based on ppp. in these terms, china's  gdp  is $23.19 trillion exceeds the  u.s. gdp  of $19.42 trillion