of the following parents giving praise to their child, which is using the most effective strategy?
a. cornelius uses the phrase, "you did a wonderful job" every time he praises his daughter.
b. abdul tells his daughter, "you’re a good girl" when she is polite to the neighbor.
c. barney tells his son, "i’m so proud of how well you prepared for your biology test."
d. ed, who after his daughter shows him her artwork, avoids making eye contact but says, "that’s a great job you did."
e. darnell says to his son, "i’m proud of how you played tennis, but maybe next time you’ll get more points."

c. Barney tells his son, "I’m so proud of how well you prepared for your biology test."

Explanation:

Barney has used the most effective strategy in praising and motivating his son. While Cornelius uses monotonous phrase for praising his daughter but without giving reason. Abdul uses a common level of praise but not for any big achievement. Ed praises his daughter but not with enthusiasm since he avoids eye contact. Darnell praises his son but adds an encouraging words which shows his son did not do well.  

"choosing is refusing" means individuals face an opportunity cost with each decision they make. economists state that every decision involves trade-offs. opportunity cost is the least desirable alternative given up as a result of a decision.

answer; role- taking;