In my opinion I don't think source A is very useful as evidence about attitudes of suffragettes. Source A is a photograph of a suffragette demonstration. The photo shows quite a few women standing around and amongst the women is Mrs Emmeline Pankhurst who is leading the demonstration. In the centre of the picture is a flag which would show the reader that there is some sort of protest going on if it didn't already tell you. Also in the photo is a policeman and from what I can see, he doesn't seem to be doing anything.
I believe that a photo can't always catch exactly what is going on. It can only catch something that is happening at that exact moment it has been taken, and in this case, I don't think that the photo can show you exactly what was happening that day at that specific demonstration. The source does not show what may be happening in ten minutes time. It does not show violence as it captures still shots. The source gives me an idea about what protests are like, for example they all stand around in big groups and hold up flags and banners while other people watch.
I have studied the photo carefully and I noticed that the policeman looks like he is about to move or walk somewhere. He may have been about to go and stop some trouble either starting, or what is already happening somewhere amongst the protest. The person who took the photo may have took it at a good point when the women protesters were calm and settled, but you, and I don't really know as the photo does not show things properly. A few seconds after the photo was taken all of the women could have broken out into a massive violent demonstration. The photo might have been taken at the start when everyone was just beginning to get into the spirit of protesting, yet if it was taken in the middle, further on in the day then they may have been more rowdy, abusive and caused more trouble. .
The photo was taken on the 21st of June 1908.