I wish Mark would_____ a little better when we have visitors

I wish Mark would_____ a little better when we have visitors 选择题
选项：
A．affect　　B．effect C．behave　　D．conduct
详细解答

先看看各个词的解释和用法吧
一.affect1
及物动词 vt.
1.影响;对...发生作用
The amount of rain affects the growth of crops.
雨量影响作物的生长.
2.使感动,使震动
She was deeply affected by the news of her father's death.
她父亲去世的消息使她深受震动.
3.(病)侵袭;罹患
Her kidneys had become affected.
她的肾脏受到了感染.
affect2
及物动词 vt.
1.假装,装作[+to-v]
He affected not to see her.
他假装没看见她.
He affected ignorance of the law.
他假装不知法.
2.爱好,爱用
She affects old furniture and china.
她喜欢古老的家具和瓷器.
3.常去
二.effect
名词 n.
1.结果[C][U][(+on/upon)]
2.效果,效力;作用;影响[C][U][(+on/upon)]
This had a great effect upon the future of both mother and son.
这对母子俩的将来影响很大.
3.要旨,意义[the S]
I said a few words to the effect that all he had told us was already well known.
我说了几句话,大意是他所告诉我们的一切早已为人熟知.
4.(法律的)效力,产生效力[U]
5.(色彩,声音等产生的)印象;效果[C][P1]
6.财产,动产[P]
及物动词 vt.
1.造成;产生;招致
Rose tried to effect a reconciliation.
罗丝试图进行调解.
2.实现,达到(目的)
He effected several important changes.
他完成了几项重要的改革.
三.不及物动词 vi.
1.表现,行为举止[Q]
The young lady behaved courageously in the face of danger.
那位年轻女士面对危险表现得十分勇敢.
2.行为检点,听话,表现好
3.(机器等)开动,运转
How is the new machine behaving?
新机器的性能怎样?
4.(事物)起某种作用
The chemical can behave as an acid.
这种化学制品能起酸的作用.
及物动词 vt.
1.(后接oneself)使检点,使守规矩
Behave yourself!
规矩点!
2.(后接oneself)使表现得(...)[O]
四.conduct1
及物动词 vt.
1.引导,带领
He conducted the members of the audience to their seats.
他引观众到他们的座位上.
2.实施;处理;经营,管理
They hired agents to conduct their affairs.
他们雇请代理人来处理他们的事务.
3.为人,表现[O]
4.指挥(军队,乐队等)
Mr.Green will conduct the orchestra.
格林先生将指挥这支管弦乐队.
5.【物】传导(热,电等)
Most metals conduct electricity.
大多数金属能导电.
不及物动词 vi.
1.引导,带领
2.指挥乐队
conduct2
名词 n.[U]
1.行为,品行,举动
She always got the good conduct prize.
她总是得到品行优良奖.
2.指导;引导
3.(业务,活动等的)管理,经营,处理
这里应该就是个词义的理解,原句想要表达的意思是我希望我们有人参观的时候Mark会表现好一点C就是此意,D是指品行,其它两项根本联系不到