How do you say to whom it may concern in french? ?

Natasha, belinda, and ava are working on an art project together. when natasha sees whatbelinda has contributed, she says there is no way they can include her work because it lookslike a third grader did it. the communication mistake natasha has made isa.)groupthinkb.)collaborating with strangers. c.)failing to create a group connection. d.)criticizing the person, not the process.

Lena has recruited a small group of students to volunteer to clean up the local park. the typeof group that would best serve this purpose is a(a.)informationalb.)learningc.)foc usd.) task

But we pulled at the grill [on the ground] and it gave way. and then we saw iron rings as steps leading down a shaft into a darkness without bottom. … it was a great tunnel. its walls were hard and smooth to the touch; it felt like stone, but it was not stone. on the ground there were long thin tracks of iron, but it was not iron; it felt smooth and cold as glass. we knelt, and we crawled forward, our hand groping along the iron line to see where it would lead. but there was an unbroken night ahead. what is the most likely explanation for the walls described in the bold text?