Choose the correct statements about attention:

Select one:

a$.$

Attention is the process of concentrating on something at a specific point in time.

b$.$

People do not differ in terms of their attention span.

c$.$

Attention is influenced by the way information is presented and people do not differ in terms of their attention span.

d$.$

Attention is influenced by the way information is presented; some people$$s attention can be distracted while others can concentrate on a task irrespective of external disturbances; and Attention is the process of concentrating on something at a specific point in time.