Chapter 02 · Section 2.1

Put option

A put option:

b) gives the option writer the right - not the obligation - to buy the underlying asset at a specified price.
No. An option, be it a call or a put, gives the right - not the obligation - to the holder only. Of course, whether it is the right to buy or sell depends upon the type of option (call or put).
c) gives the option writer the obligation - not the right - to sell the underlying asset at a specified price.
d) gives the option holder the right - not the obligation - to sell the underlying asset at a specified price.