Answer:
Decomposition rates would be lowered because fungi would be destroyed.
Step-by-step explanation:
The fungi are considered one of the decomposers of nature along with ascomycetes and the bacteria. The fungi are considered decomposers as the heterotrophic organism which absorbs the nutrients from the organism.
In the given question, when the fungicide was sprayed on the area with the fungus, then the decomposition rate of that area will decrease as the fungicide kills the fungi. As a result of this killing, the rate of decomposition will decrease in that area.
Thus, the selected option is correct.