$1.$ The exponential smoothing model will produce a na$$ve forecast when$(4$ pts$)$

the smoothing constant, $,$ is equal to $0\mathrm{.}00$

the smoothing constant, $,$ is equal to $1\mathrm{.}00$

the smoothing constant, $,$ is equal to $0\mathrm{.}50$

the smoothing constant, $,$ is equal to $2\mathrm{.}00$