The right option is; A. browse
View skim and preview are in the same word family as browse.
Viewing is an act of seeing or looking at something. Preview is a foretaste, or an opportunity to see something such as an exhibition, or a film before it is obtained, or becomes available to the public. Browse means to view something casually (not for a long time), inorder to find items of interest especially without having the knowledge of what one is looking for.