Please (lay, lie) the box of (stationary, stationery) on the secretary's desk

Intercity bus travel _______.

Fill in the blank(s) with the appropriate word(s).

Mary is concerned that inflation will reduce the purchasing power of her life insurance proceeds when she dies. To provide protection against this risk, she added a rider to her policy that allows her to purchase one-year term insurance equal to the cumulative change in the consumer price index from the issue date of the policy. This provision is called a:

(a) Cost-of-living rider (b) Guaranteed purchase option (c) Waiver-of-premium provision (d) Change of plan provision