According to the proponents of the Hawthorne effect, giving more attention to employees will do what?

a$.$

Increase synergy, leading to lower costs and higher productivity.

b$.$

Increase costs because employees will rebel against efficiency measures.

c$.$

Decrease synergy, leading to higher costs and lower productivity.

d$.$

Cut costs because employees will be inspired to be efficient.

e$.$

Cause employees' morale to lower and productivity to drop.

f$.$

Cause employees' morale to increase and productivity to rise.