In this instance, giggling and squirming is a conditioned response (CR).
A CR is a learned automatic response that occurs when a neutral stimulus is repeatedly followed by an unconditioned stimulus, till the neutral stimulus by itself elicits a conditioned response. In this scenario, the CR is Grace whistling, the unconditioned stimulus is the tickling, and the response is Khaleel giggling and squirming. After the repeated pairing of Grace's whistling followed by tickling, Grace's whistling alone creates the conditioned response in Khaleel.
Option B, would be the best answer :)
The economy of ancient Greece<span> was defined largely by the region's dependence on imported goods. As a result of the poor quality of </span>Greece<span>'s </span>soil<span>, agricultural trade was of particular importance. The impact of limited crop production was somewhat offset by Greece's paramount location, as its position in the </span>Mediterranean<span>gave its provinces control over some of Egypt's most crucial seaports and trade routes. Beginning in the </span>6th century<span> BC, trade </span>craftsmanship<span> and </span>commerce<span>, principally </span>maritime<span>, became pivotal aspects of Greek economic output.</span>
I would say D) John Maynard Keynes >>> If this is incorrect just inbox me