The answer is c I hope that helps
Actually your answer is wrong. Ava has already use 1 teaspoon of spice plus 1/3 teaspoon plus another 1/2 teaspoon of spice. 1/3 + 1/2 = 5/6 so the answer is 1 5/6 teaspoons of spice.
3/5 > 1/2 ~ because 3/5 is 60% of 1 and 1/2 is 50% of 1
2/6<1/2 ~ because 2/6 is 33% of 1 and 1/2 is 50% of 1
Hope I helped!
~ Zoe