The intention in this exercise is to produce one strong attractive image which signified rain. The viewer should be in no doubt what the image is representing.
I considered several options for this and took a number of pictures, some slightly abstract and some which contained indexical signs for rain. I chose this one because I felt it encapsulated what the exercise was asking for: there is no doubt that the subject of the photograph is rain; I believe it is an interesting image, in that the focus point is the water running from the awning even though the apparent subject is the umbrella, which is out of focus. The slow shutter speed meant that the falling rain leaves clear lines as it falls in various directions.
Salkeld, R. (2014). Reading Photographs. London: Bloomsbury.