A gene can be regulated post-transcriptionally by any of these processes, EXCEPT:

A) inhibition of translation binding
B) by a tissue-specific transcriptional activator
C) use of alternative 3' polyadenylation sites
D) use of alternative splice sites degradation of mRNAs

The rate that would change would be the  searching efficiency/attack rate. there are only two other rates in this model: the  growth rate of prey, and the  predator or consumer mortality rate.the  searching efficiency/attack rate is what indicates how effectively can a predator capture its prey whether in the searching process or actual capturing/attacking process.