The key idea here is the common phrasal pattern after the verb provide: you give something to someone by using with to introduce the thing that’s being provided. In this sentence, Neil is giving us something, and that something is a lot of practice. So the natural structure is provide someone with something, meaning “give someone something.” That’s why with fits best: it shows what is being provided to us. Other prepositions don’t fit the idea of giving us something. To would imply direction or recipient in a way that isn’t natural here; for would suggest simply supporting or supplying for our needs rather than handing us the actual practice; in isn’t used to show what is being provided to someone. The standard, natural way to express this idea is provided with.

The idea being tested is how to express quantity with a plural count noun. When you have a plural count noun like books, using a precise number directly shows an exact quantity. Two is a cardinal number that fits naturally in front of a plural noun to give a clear count, so the sentence reads as a straightforward statement: He bought two books. The other options are indefinite quantifiers that convey approximate or non-specific amounts (several, some, a few), which would change the nuance of the sentence even though they can be correct in different contexts.

The important idea here is how we describe the way someone speaks. To express that someone spoke in a certain manner, we use the preposition that signals the manner, followed by the noun that names that manner. In this case, “with confidence” is the natural collocation, meaning he delivered his words in a confident way. Why this fits best: “spoke with confidence” directly describes the manner of his speaking—the confidence he projected while addressing the audience. The other options don’t convey this sense. “In confidence” would suggest secrecy or telling something privately; the phrases with “at” or “on” don’t pair with “confidence” to describe how someone speaks in this context. If you wanted a different phrasing, you could say he spoke confidently, but with is the idiomatic choice for this sentence.

The tendency here is to compare how important two things are using a standard comparative form. Saying something is less important than something else expresses a smaller degree of importance. In this sentence, because modern life is busy, convenience outweighs perfection, so “less important” fits naturally: making the tea perfectly isn’t as crucial as making it easily and conveniently. Using “more” would flip the meaning, implying perfection is more important. “As” would be used for equality (as important as), which doesn’t match the intended comparison. “Not” wouldn’t fit the pattern unless you had “not as important as,” which isn’t the form shown. So the correct choice is the word that marks a lower degree of importance.