[Solved] At expiry, a holder of a call option (with an exercise price of $18.50, purchased for a premium of $1.05)over JB Hi-Fi shares will exercise if the share-price is $19.76. Maternal Immune Response: The reaction of a mother's immune system to foreign substances, which can affect pregnancy, fetal development, and the health of the newborn. Erotic Plasticity: The degree to which one's sex drive or sexual preferences can be influenced by environmental, situational, or cultural factors. Spirit God: An entity in various religious and spiritual beliefs that is considered divine or sacred, embodying the essence of spirituality or godliness. Ancestors: Direct family members from previous generations, including parents, grandparents, and beyond, contributing to one's genetic and cultural heritage.