Problem-solving activities include
(a) exploring spatial relationships.
(b) viewing a mobile.
(c) smiling at a caregiver.
(d) saying first words.

In a search a driver needs to look in a of distances far away to near, as well as to the left, right and rear of the vehicle, making efficient use of both central and fringe vision. a) fast manner b) systematic manner c) slow manner d) aggressive