Many software companies allow customers to use limited versions of their software free for 30 days. this strategy tries to increase the diffusion of a new product through increasing
a. relative advantage
b. compatibility
c. complexity
d. trialability
e. observability

d. trialability

Explanation:

Based on the information provided it can be said that this strategy tries to increase the diffusion of a new product through increasing trialability. This term refers to the ease with which potential customers can test out a company's new product or service for a limited time without having to pay money for it. This allows them to determine whether the product/service is good for them and whether it is worth buying.

i mean, there is a lot of homeless people. but it is a very busy place and always in need for people who can be busy so it's not impossible to find one.

the first successful, urban blues recording, selling more than 75,000 copies, was made in year 1920.

mamie smith recorded the first commercially successful example of the urban blues,   with the recording of “crazy blues”."crazy blues" was recorded on august 10, 1920, in new york city. within a month of the release of “crazy blues” it had sold 75,000 copies.