The FIRST ONE and the THIRD ONE, hope this helped.
C) Pitchers threw at his head.
This line "Pitchers through at his head." uses the incorrect "through". This "through" means to go in and out of something, like a doorway. I walked through the doorway into the other room. The sentence needs the "threw" that means to take an object with your hand and propel it to another location. Threw is the past tense of the word throw. It is an irregular past tense verb, so it doesn't follow the rule of adding /ed/ to create past tense.
The answer is B. Keep prices of foreign imports close to the price of domestic goods
