Which CMMC $2\mathrm{.}0$ Level $1$ practice requires organizations to use a sign$-$in and sign$-$out sheet for employees and visitors?

$1.$

CMMC $2\mathrm{.}0$ Level $1$ Practice $9$: Escort Visitors and Monitor Visitor Activity requires organizations to use a sign$-$in and sign$-$out sheet for employees and visitors.

$2.$

CMMC $2\mathrm{.}0$ Level $1$ Practice $10$: Maintain Audit Logs of Physical Activity requires organizations to use a sign$-$in and sign$-$out sheet for employees and visitors.

$3.$

CMMC $2\mathrm{.}0$ Level $1$ Practice $11$: Control and Monitor Physical Access Devices requires organizations to use a sign$-$in and sign$-$out sheet for employees and visitors.

$4.$

CMMC $2\mathrm{.}0$ Level $1$ Practice $15$: Identify Information System Users, Processes Acting on Behalf of Users, or Devices requires organizations to use a sign$-$in and sign$-$out sheet for employees and visitors.