Agroup of senators from states that are large suppliers to the space program protest the decision by the federal government to end manned space flights. this group would be an illustration of

I would say these senators could be an example of a lobby group which by uniting together can have a powerful voice with the US administration to work on the government and perhaps change their minds about manned space programs if they have good enough reasons to keep them.,

Ithink the most approximate answer would be b.i hope it you!