How can we maximize data density?

Certain basic visual properties are detected immediately by low-level visual system and they just “pop-out” and do not need serial search.This is known as:

Which of the following occupations has the highest prestige score?

What are the layers of the tooth from hardest to softest?

How many moles of carbon atoms are there in 0.500 moles of C2H6?  

A casino employs a technician to repair slot machines that break down at an average of 6 machines per day (Poisson in nature). The casino operates 2000 slot machines on the casino floor. The technician can service an average of 9 machines per day, with a repair time distribution that approximates an exponential distribution. The technician’s cost is approximately $150 per day, while the cost associated with lost productivity from each machine breakdown is estimated at $120 per machine per day (or any fraction thereof).  If the casino hired a second technician at the same cost as the first what would be the cost savings (i.e. the change in the sum of lost productivity cost plus service cost)?

Young children who engage in longer periods of joint attention with their caregivers have relatively larger vocabularies at age 18 months than those of children with fewer such experiences. 

Which brain area is involved with planning and action selection prior to movement:

On average, infants produce their first true word around age ____________________.

What is the structure indicated by the arrow?