Answer:
a. The ROA: 
Venture XX = After tax profit margin * Asset turnover = 5% * 2 = 10% 
Venture YY = 25% * 3 = 75% 
Venture ZZ = 15% * 1 = 15% 
 
B) The strong entrepreneurial venture opportunity is Venture YY being havibg higher ROA at 75%. 
 
C) The Venture ZZ seems to be more of a commodity-type business because the return on sales and asset turnover is moderate one.