Amelia is CEO at a large employment agency providing support to job-seekers across Australia. Recently she has noticed that many of her senior managers appear to be unmotivated and disengaged at work. She has decided to use some of the most recent OB theory to address their low levels of motivation. If she wanted to address their innate need to acquire resources, which of the following actions would be most appropriate? O a. Make sure that all jobs are designed so that employees can regularly acquire new skills b. Ensure that all rewards and incentives offered are clearly linked to performance O c. Offer frequent opportunities for promotions as well as motivating perks d. (a) and (b) only