In a group discussion, which sentence is most clearly challenging the
credibility of a source?
a. i disagree with gutierrez completely that quantum computers will
be faster than current computers.
b. the purpose of gutierrez's article is to make a point, not to teach a
lesson about something technical.
c. gutierrez's article is way too old to say anything relevant about
computer science today.
d. when gutierrez refers to qubits, she's talking about the field of
quantum computing.

The story line remains the same. the kids live in what was then one of the remaining beachfront slums, down the coast from the expensive malibu area. the beach was ruled by surfers, but in the afternoon, when the waves died down, some of the surfers, or their younger brothers, fooled around on skateboards. one day, skip engblom, the shop owner, comes up with a key breakthrough, polyurethane wheels: "they grip." with the additional traction, the z-boys try skating the sides of the big, open drainage canal that runs through the area. then comes a brainstorm: because of a drought, the area's swimming pools were drained. the kids started "borrowing" pools when the owners weren't home, to skate the curved sides.” where did “the lords of dogtown” originally practice their tricks? a. the beach c. an open drainage canal b. empty pools d. none of these

Identify the participle or infinitive phrase in the sentence below

Which component is necessary to create an effective and debatable thesis statement