Describe the strength and weaknesses of the sender's(callie)communication strategy. what could callie have done differently to communicate more effectively?

Your question isn't complete as you didn't provide Callie's message but I searched online and got the message and I'll answer accordingly.

The strength of the communication strategy that Callie used include:

The weakness of the strategy include:

To communicate more effectively, she could have done the following:

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a, b, c - sides of a triangle

a + b > c

a + c > b

b + c > a

we have a = 5m and b = 11m. substitute:

5 + 11 > c

16 > c → c < 16

5 + c > 11         subtract 5 from both sides

c > 6

11 + c > 5         subtract 11 from both sides

c > -6

c < 16 and c > 6 and c > -6

thereofre your answer is 6m < c < 16m

this would and i think the answer is d