A gerund is a verb changed into a noun by adding 'ing' to the end of the word.
So your answer is B. Jogging
Hope this helps. :)
they'll flock in droves
these rich Londoners
they'll fight for that stock
I'm a made man forever
I'll never forget you as long as I live
In less than twenty-four hours London was abuzz
the mine is worth far more than he asks for it
I spent all my evenings at the minister's with Portia
