True or false? night photographs are usually taken by just holding the camera and shooting the photograph.

No, this is false.

Photography is dependent on light, and when there is very little light (during the night, especially when there is not enough artificial light) there might not be enough light to make the picture possible.

In order to make good night photography, long exposure is necessary, so it is recommended to use a stative for example. 

4because of my mind tells me to pick 4

Falsea long text data type can store a variable amount of text or combination of text and numbers where the total number of characters may exceed 255.