PLEASE HELP WILL GIVE BRAINLIEST

i think its a

Explanation:

what made me think of this answer is "she casts a spell to keep the chicks warm after when the bulb breaks" she had to face the consequences tho she did the right thing

also i'm sorry if if is wrong but i hope its right and i hoped i helped out a little bit

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally