Without the force of friction, people would not be able to walk. select the best answer from the choices provided. t f

-- The choices provided are 't' and 'f'.

-- If we assume that these mysterious symbols represent the words
'true' and 'false', then the question begins to make some sense.

-- We review the statement that introduces the question, and we see
that it is in fact expressed with considerable veracity.

-- We now know the the better of the choices offered is the letter 't',
representing the word 'true', corresponding to the intrinsic truthiness
of the statement concerning friction and walking.

The answer is b.the gaseous state is electrically positive, while the plasma state is electrically negative.