苔藓植物较藻类植物更为进化的是（　　）

A．有叶绿体，能进行光合作用

B．有茎、叶的分化

C．有较强的机械组织

D．有较强的输导组织

A 35-year-old client is undergoing a brain computed tomography (CT) scan because of continued migraine headaches. He’s placed in the CT scanner and suddenly begins to complain of palpitations, sweating, shortness of breath, and shaking. The client is most likely experiencing（）

A. an allergic reaction.

B. a myocardial infarction (MI).

C. a panic attack.

D. a hypoglycemic episode.