what would be the major result of long-term use of the same pesticide ona fruit orchard?

a. reduced fruit production
b. increased fruit production
c. soil pollution
d. salization of soil
e. etiolation of leaves

is it d?

2 answers

soil microflora and microfauna are often affected with long term use of the same pesticide.
i don't know what those are. Which answers would it apply to (a,b,c,d,or e?)