Answer: D) Oxytocin
Love is a complex emotion and experience that involves a variety of chemicals and processes in the brain and body.
One of the most well-known chemicals associated with the feeling of love is dopamine, which is a neurotransmitter that plays a key role in reward-motivated behavior. Dopamine is released in the brain when we experience pleasurable stimuli, such as spending time with a loved one, and it is thought to contribute to the feelings of pleasure and happiness that accompany being in love.
Another important chemical involved in love is oxytocin, which is sometimes called the "love hormone" because it is released during social bonding activities like hugging, kissing, and cuddling. Oxytocin is thought to promote feelings of closeness, trust, and attachment, and it may play a role in promoting long-term relationships.
Other chemicals that may be involved in the experience of love include serotonin, which can influence mood and behavior, and norepinephrine, which is associated with the "butterflies in the stomach" feeling that people often describe when they're in love.
It's important to note, however, that love is a complex and multifaceted experience that can't be reduced to a single chemical or process. Different people may experience love in different ways, and the specific chemicals and neural processes that underlie the experience may vary from person to person and situation to situation.
Miscellaneous 
Miscellaneous