Answer:
<em>1. When the price of fresh fish increases 5%, quantity demanded decreases 10%. The price elasticity of demand for fresh fish is elastic.</em>
<em>2. The determinants of elasticity include d) all of the above.</em>
<em>3. Cross-price elasticity of demand measures the response in the d) quantity of one good demanded to a change in the price of another good.</em>
<em>4. A value of price elasticity of demand equal to 2 means that b) quantity demanded falls by two times the amount of an increase in price.</em>
Explanation:
<em>Price elasticity of demand = % change in quantity demanded of a good / % change in price of the good</em>. Value greater than 1 implies quantity demanded is price elastic, equal to 1 implies quantity demanded is price unitary elastic and smaller than 1 implies quantity demanded is price inelastic.
<em>Cross Price Elasticity of demand = % change in quantity demanded of a good / % change in price of another good</em>.
For rest, refer to the answer.