Briefly describe the development and influence of Cubism. a. It sought to realistically depict the world, at the expense of crea
ting interesting images. b. It had no repercussions in the greater art world, and ended up being a dead branch on the art "family tree". c. Picasso and Braques sought to express views on everyday life by studying the formal aspects of art – especially the basic geometric shapes underpinning all form, and was influential in creating distinctive art styles worldwide. d. It was developed over the course of a few days at a conference, but then the artists quit using the style.
Realised needs to be changed from the past tense to the present tense so that it is realise. In this case, the verb is part of a prepositional phrase and is being used to talk about moment within a story set in the past.
Have forgotten needs to be changed to had forgotten since it is a past action that happened before another action in the past.
Bought and got need to be changed to buy and get so that the sentence is parallel. These words are part of a series of actions that starts with the wake.