Answer:
B. The pea flowers are pollinated at random.
Step-by-step explanation:
Hardy-Weinberg equilibrium states that allele and genotype frequencies will remain same in next generations without any evolutionary influence among a population.
If the pea flowers are pollinated at random, then the population will not follow Hardy-Weinberg equilibrium because random pollination give rise to variation among the population as flower will pollinate randomly and allele and genotype frequencies varies showing both tall and recessive alleles.
Hence, the correct answer is "B".