Here are the answers based on the context provided:

### SYNONYMS
**Question 43:** The word "diminish" means to reduce.
- **Answer:** A. reduce

**Question 44:** The phrase "just a drop in the ocean" implies a very small amount in comparison to a larger context.
- **Answer:** D. a small amount

**Question 45:** To "apportion" means to divide or distribute.
- **Answer:** A. divide

### WORD FORMATIONS
**Question 46:** The word that fits to describe critiques is "highlight."
- **Answer:** B. Highlight

**Question 47:** The investigation into tax affairs would be thorough and expansive, leading to "extensive."
- **Answer:** C. extensive

**Question 48:** The term that fits for the ingredients in pasta is "addition."
- **Answer:** D. addition

### ANTONYMS
**Question 49:** "Magnified" means enlarged.
- **Answer:** B. enlarged

**Question 50:** "Minute" means very small or tiny detail.
- **Answer:** D. tiny

Feel free to ask if you need further clarification or assistance!