Members of congress get benefits from lobbyists. what are they?

What are what ?  The members of Congress ?  The lobbyists ?  The benefits ? . . .  The benefits may include restaurant meals, football tickets, donations to your favorite charity, a neck rub, a puppy, Sunday afternoon on Chesapeake Bay on my boat, a fifth of 10-year-old Scotch, an in-depth discussion of social and economic issues with a beautiful business-woman, or anything else that's either legal or can be given without getting caught.

diagram is missing, but i will try to explain your doubt.

answer:

amplitude is the maximum displacement or distance moved on a point of a vibrating body or wave measured from its equilibrium position.it is equal to half the length of vibration path.