what the answer please

Answer:
D . cuz no matter how many times the coin is tossed, probably remains the same at 1/2
Answer:
E
Step-by-step explanation:
Possible combination
TTTT
TTTH
TTHH
THHH
The only case is THHH which number of heads minus tails is 2
The probability is (1/2)^4
=0.0625
Consider the combination:
THHH, HTHH, HHTH, HHHT
P(X=2)=(4!/3!)(1/2)^4=0.25
Ans: E