Aikam is $6\text{'}6"$ tall. When Aikam started working as a graphics designer, his manager noticed that the standard work desk was too small for him. The manager ordered him lifts to put under the desks that increased Aikam's desk height by $4$ inches. What is this an example of$?$

a$.$

Employee assistance

b$.$

Ergonomics

c$.$

Retooling

d$.$

Wellness

e$.$

Reasonable notice