Daily Practice Questions

Explanation: The changes in the answer choices identify apostrophes/pronouns as the topic. There is no such word as its', so eliminate (A). The laptop (context from the non-underlined portion in the previous question) is singular, so eliminate (B). To determine whether you need the possessive or a contraction, expand out to it is. It is screen makes no sense, so choose the possessive pronoun, (D).

Explanation: is best because it is written in standard English. The other choices are flawed by such weaknesses as awkward, unidiomatic expression, lack of parallelism, faulty comparison, and redundancy. (Whether the statement proves the speaker’s point is another matter.)

Explanation: Getting to the Answer: The general trend of the data is that it increases in a nonlinear way, so the average rate of change appears to be greater after 2012. Eliminate (A) and (B). For (C), the vertical distance between the data points at 2013 and 2014 is greater than one tick mark, whereas for (D), the vertical distance between the data points at 2014 and 2015 is one tick mark. Since the horizontal interval for (C) and for (D) is the same (1 year), (C) has a greater average rate of change. Therefore, (C) is correct.

Explanation: In order for numerical elements to be added to an ArrayList , each element must be wrapped in a wrapper class before insertion into the list. Then, to retrieve a numerical value from the ArrayList , the element must be unboxed using the intValue or doubleValue methods. Even though these operations can be taken care of with autoboxing and unboxing, there are efficiency costs. In an array, you simply use the [] notation for assignment (as in arr[i] = num ) or retrieval ( value = arr[i] ). Note that choices B and C are false statements: Both insertion and deletion for an array involve writing code to shift elements. An ArrayList automatically takes care of this through its add and remove methods. Choice D is a poor reason for choosing an array. While the get and set methods of ArrayList might be slightly more awkward than using the [] notation, both mechanisms work pretty easily. Choice E is false: Efficiency of access is roughly the same.

Explanation: Choice (B) is correct because it directly translates the student's notes into actionable advice by listing specific preventative measures: avoiding inserting objects into the ear and protecting oneself from loud noises like rock concerts. This aligns with the goal of recommending concrete steps to avoid hearing loss, whereas choice (A) incorrectly identifies conductive hearing loss as an inner ear issue, choice (C) describes a demographic risk rather than a preventive action, and choice (D) makes a vague generalization without offering specific measures.

Explanation: Side A has a lower solute concentration and a higher water potential than side B, so water will move from the higher water potential on side A to the lower water potential on side B. Since albumin cannot cross the barrier in order to satisfy equilibrium, water will flow toward side B in order to dilute the solution. Choice (B) correctly states that water will move from side A to side B, but it incorrectly explains the reason for the movement of water in this direction. Choices (C) and (D) are incorrect because water will move from side A to side B, not from side B to side A.