As sarah approaches middle adulthood, she maintains a diet high in calcium and exercise because she is concerned about her risk for
a. diabetes
b. rheumatoid arthritis
c. osteoporosis
d. gallbladder disease

c. Osteoporosis

Explanation:

Osteoporosis -

It is the disease which weakens the bone and increases the chances of bone braking .

Osteoporosis is one of the most common reason for a broken bone during old age . The most common bone affected by this are the , spine , hip , forearm .

hence , from the question , Sarah is maintaining a good diet with high calcium concentration and working out , to maintain her bones and avoid the problem of Osteoporosis .

answers are:

lysogenic     viral dna merges with host cell dna

lysogenic     no symptoms

lytic               viral dna takes over

lysogenic     virus does not destroy host cell

lytic               virus destroys host cell

lytic               induces symptoms of viral infection

lysogenic       cell reproduces and spreads provirus