Children like to feel the joke coming, in this way; they love the anticipation of a laugh, and they will begin to dimple, often, at your first unconscious suggestion of humour. If it is lacking, they are sometimes afraid to follow their own instincts. Especially when you are facing an audience of grown people and children together, you will find that the latter are very hesitant about initiating their own expression of humour. . . . Often at the funniest point you will see some small listener in an agony of endeavour to cloak the mirth which he—poor mite—fears to be ,begin underline,indecorous,end underline,. Let him see that it is "the thing" to laugh, and that everybody is going to.



(from ,begin underline,Stories to Tell Children,end underline, by Sara Cone Bryant)
Question

What does the word ,begin emphasis,indecorous,end emphasis, mean as it is used in this passage?
Answer options with 4 options
1.

disguised
2.

dismissed
3.

imitated
4.

improper

4. improper