Read the scenario below and answer the question that follows.

william is driving his car to school. while changing the radio, he accidentally strikes and kills a man crossing the street.

william’s behavior could not be classified as aggressive because william’s behavior was
a.
unintentional
b.
irresponsible
c.
violent
d.
frustrating

Option A, irresponsible

Explanation:

William was not intentionally "irresponsible" but due to his careless behaviour a man was killed by his car. He must have focused on the road rather than on changing the radio station. And in case if wanted to do so he must have visualized the traffic condition and then must have stopped or slow down his car before doing so. Since he continued with the same speed while changing the radio station, his car struck a man and led to his death. Thus, it is the fault of William somewhere.

the answer is c) abandoned properties that are contaminated with hazardous materials.

organisms that lack symmetry are called asymmetrical and belong to phylum porifera/sponges.

organisms with specialized stinging cells belong to phylum cnidaria. stinging cells are called cnidoblast cells.

cnidarians show two morphological forms : polyp (sessile) and medusa (mobile)

filter feeding is observed in porifera members.  

alternation of generation is observed in coelenterata or cnidaria. there is alternation of asexual polyp form and sexual medusoid form. it is also referred as metagenesis.