Select the best answer for the question.
1. which statement is true concerning blood cells?

a. white blood cells take oxygen to body tissue.
b. white blood cells contain hemoglobin.
c. white blood cells contain a protein that releases oxygen.
d. red blood cells contain a protein that binds with oxygen.

Steffi is reviewing various licenses and their uses. match the licenses to their respective uses.

mark, a civil engineer, entered into a contract with david. as per the contract, mark agreed to design and build a house for david for a specified fee. mark provided david with an estimation of the total cost and the contract was mutually agreed upon. however, during construction, when mark increased the price due to a miscalculation on his part, david refused to pay the amount. this scenario is an example of a mistake.

Kevin and jenny, who are both working full-time, have three children all under the age of ten. the two youngest children, who are three and five years old, attended eastside pre-school for a total cost of $3,000. ervin, who is nine, attended big kid daycare after school at a cost of $2,000. jenny has earned income of $15,000 and kevin earns $14,000. what amount of childcare expenses should be used to determine the child and dependent care credit?