The answer is B: teal heart.

The rule
The pattern repeats every 3 things: pink triangle, teal heart, teal heart. Then it starts again from the beginning.
The pattern as Python code
Here is a tiny Python program that follows the same rule. Type it into IDLE and run it to print the whole pattern, including the answer.
pattern = ["pink triangle", "teal heart", "teal heart"]
for position in range(8):
print(position + 1, pattern[position % len(pattern)])
When you run it, Python prints:
1 pink triangle 2 teal heart 3 teal heart 4 pink triangle 5 teal heart 6 teal heart 7 pink triangle 8 teal heart
Pixel says: Try changing a number in the code and run it again. Can you make the pattern go on for 20 steps? Meow!